/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 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:58:21,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:58:21,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:58:21,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 20:58:22,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 20:58:22,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:58:22,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:58:22,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:58:22,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:58:22,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:58:22,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:58:22,073 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:58:22,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:58:22,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:58:22,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:58:22,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:58:22,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:58:22,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:58:22,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:58:22,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:58:22,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:58:22,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:58:22,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:58:22,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:58:22,335 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 20:58:22,337 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 20:58:22,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-06-05 20:58:22,338 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-06-05 20:58:22,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:58:22,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 20:58:22,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:58:22,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:58:22,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:58:22,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:58:22,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:58:22,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:58:22,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:58:22,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... [2021-06-05 20:58:22,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:58:22,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:58:22,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:58:22,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:58:22,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:58:22,466 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-05 20:58:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-05 20:58:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-05 20:58:22,466 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-05 20:58:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-05 20:58:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-05 20:58:22,466 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-05 20:58:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-05 20:58:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-05 20:58:22,466 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-05 20:58:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-05 20:58:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-05 20:58:22,467 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-05 20:58:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-05 20:58:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-05 20:58:22,467 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 20:58:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:58:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:58:22,467 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-05 20:58:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-05 20:58:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-05 20:58:22,468 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 20:58:22,588 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:58:22,588 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 20:58:22,589 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:58:22 BoogieIcfgContainer [2021-06-05 20:58:22,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:58:22,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:58:22,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:58:22,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:58:22,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:58:22" (1/2) ... [2021-06-05 20:58:22,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a24667b and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:58:22, skipping insertion in model container [2021-06-05 20:58:22,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:58:22" (2/2) ... [2021-06-05 20:58:22,594 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-06-05 20:58:22,598 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:58:22,598 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:58:22,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 20:58:22,599 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:58:22,715 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-06-05 20:58:22,737 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-05 20:58:22,750 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:58:22,750 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:58:22,750 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:58:22,750 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:58:22,750 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:58:22,750 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:58:22,750 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:58:22,750 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:58:22,756 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 264 flow [2021-06-05 20:58:23,003 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:23,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:23,054 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:23,055 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:23,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1530136965, now seen corresponding path program 1 times [2021-06-05 20:58:23,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:23,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287803624] [2021-06-05 20:58:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:23,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:23,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287803624] [2021-06-05 20:58:23,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287803624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:23,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:23,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:58:23,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194607806] [2021-06-05 20:58:23,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:58:23,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:23,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:58:23,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:23,251 INFO L87 Difference]: Start difference. First operand has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:23,329 INFO L93 Difference]: Finished difference Result 3545 states and 15330 transitions. [2021-06-05 20:58:23,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:58:23,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:23,371 INFO L225 Difference]: With dead ends: 3545 [2021-06-05 20:58:23,371 INFO L226 Difference]: Without dead ends: 3543 [2021-06-05 20:58:23,376 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-06-05 20:58:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-06-05 20:58:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 4.327498588368154) internal successors, (15328), 3542 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2021-06-05 20:58:23,630 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2021-06-05 20:58:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:23,632 INFO L482 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2021-06-05 20:58:23,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2021-06-05 20:58:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:23,645 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:23,645 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:23,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:58:23,645 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:23,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1760531173, now seen corresponding path program 1 times [2021-06-05 20:58:23,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:23,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545948233] [2021-06-05 20:58:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:23,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:23,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545948233] [2021-06-05 20:58:23,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545948233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:23,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:23,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:58:23,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991734435] [2021-06-05 20:58:23,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:58:23,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:23,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:58:23,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:23,698 INFO L87 Difference]: Start difference. First operand 3543 states and 15328 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:23,740 INFO L93 Difference]: Finished difference Result 2724 states and 11575 transitions. [2021-06-05 20:58:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:58:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:23,759 INFO L225 Difference]: With dead ends: 2724 [2021-06-05 20:58:23,759 INFO L226 Difference]: Without dead ends: 2724 [2021-06-05 20:58:23,760 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2021-06-05 20:58:23,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2724. [2021-06-05 20:58:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 4.250826294528094) internal successors, (11575), 2723 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 11575 transitions. [2021-06-05 20:58:23,941 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 11575 transitions. Word has length 25 [2021-06-05 20:58:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:23,942 INFO L482 AbstractCegarLoop]: Abstraction has 2724 states and 11575 transitions. [2021-06-05 20:58:23,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 11575 transitions. [2021-06-05 20:58:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:23,949 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:23,949 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:23,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:58:23,950 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash 726058139, now seen corresponding path program 1 times [2021-06-05 20:58:23,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:23,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072808946] [2021-06-05 20:58:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:23,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:23,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072808946] [2021-06-05 20:58:23,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072808946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:23,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:23,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:58:23,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026833176] [2021-06-05 20:58:23,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:58:23,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:23,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:58:23,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:23,993 INFO L87 Difference]: Start difference. First operand 2724 states and 11575 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:24,045 INFO L93 Difference]: Finished difference Result 2106 states and 8830 transitions. [2021-06-05 20:58:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:58:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:24,058 INFO L225 Difference]: With dead ends: 2106 [2021-06-05 20:58:24,058 INFO L226 Difference]: Without dead ends: 2106 [2021-06-05 20:58:24,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-06-05 20:58:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-06-05 20:58:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 4.194774346793349) internal successors, (8830), 2105 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2021-06-05 20:58:24,152 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2021-06-05 20:58:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:24,153 INFO L482 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2021-06-05 20:58:24,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2021-06-05 20:58:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:24,159 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:24,159 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:24,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 20:58:24,160 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash 130806073, now seen corresponding path program 1 times [2021-06-05 20:58:24,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:24,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510941149] [2021-06-05 20:58:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:24,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:24,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510941149] [2021-06-05 20:58:24,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510941149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:24,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:24,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:58:24,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298262512] [2021-06-05 20:58:24,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:58:24,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:24,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:58:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:24,202 INFO L87 Difference]: Start difference. First operand 2106 states and 8830 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:24,217 INFO L93 Difference]: Finished difference Result 1863 states and 7615 transitions. [2021-06-05 20:58:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:58:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:24,228 INFO L225 Difference]: With dead ends: 1863 [2021-06-05 20:58:24,228 INFO L226 Difference]: Without dead ends: 1863 [2021-06-05 20:58:24,228 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:58:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-06-05 20:58:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2021-06-05 20:58:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.08968850698174) internal successors, (7615), 1862 states have internal predecessors, (7615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2021-06-05 20:58:24,300 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2021-06-05 20:58:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:24,300 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2021-06-05 20:58:24,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2021-06-05 20:58:24,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:24,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:24,305 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:24,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 20:58:24,305 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:24,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:24,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1353410907, now seen corresponding path program 1 times [2021-06-05 20:58:24,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:24,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525078134] [2021-06-05 20:58:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:24,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:24,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525078134] [2021-06-05 20:58:24,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525078134] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:24,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:24,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:24,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074789106] [2021-06-05 20:58:24,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:24,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:24,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:24,531 INFO L87 Difference]: Start difference. First operand 1863 states and 7615 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:24,675 INFO L93 Difference]: Finished difference Result 4351 states and 16715 transitions. [2021-06-05 20:58:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:24,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:24,703 INFO L225 Difference]: With dead ends: 4351 [2021-06-05 20:58:24,703 INFO L226 Difference]: Without dead ends: 4104 [2021-06-05 20:58:24,703 INFO L810 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 [2021-06-05 20:58:24,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2021-06-05 20:58:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 1956. [2021-06-05 20:58:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1955 states have (on average 4.081841432225064) internal successors, (7980), 1955 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 7980 transitions. [2021-06-05 20:58:24,778 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 7980 transitions. Word has length 25 [2021-06-05 20:58:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:24,778 INFO L482 AbstractCegarLoop]: Abstraction has 1956 states and 7980 transitions. [2021-06-05 20:58:24,778 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) [2021-06-05 20:58:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 7980 transitions. [2021-06-05 20:58:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:24,782 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:24,782 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:24,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 20:58:24,783 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:24,783 INFO L82 PathProgramCache]: Analyzing trace with hash -278536259, now seen corresponding path program 2 times [2021-06-05 20:58:24,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:24,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609567602] [2021-06-05 20:58:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:24,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:24,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609567602] [2021-06-05 20:58:24,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609567602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:24,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:24,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:24,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810340310] [2021-06-05 20:58:24,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:24,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:24,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:24,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:24,978 INFO L87 Difference]: Start difference. First operand 1956 states and 7980 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:25,059 INFO L93 Difference]: Finished difference Result 4422 states and 16954 transitions. [2021-06-05 20:58:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:25,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:25,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:25,074 INFO L225 Difference]: With dead ends: 4422 [2021-06-05 20:58:25,074 INFO L226 Difference]: Without dead ends: 4060 [2021-06-05 20:58:25,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2021-06-05 20:58:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 1912. [2021-06-05 20:58:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 4.0847723704866565) internal successors, (7806), 1911 states have internal predecessors, (7806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 7806 transitions. [2021-06-05 20:58:25,150 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 7806 transitions. Word has length 25 [2021-06-05 20:58:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:25,151 INFO L482 AbstractCegarLoop]: Abstraction has 1912 states and 7806 transitions. [2021-06-05 20:58:25,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 7806 transitions. [2021-06-05 20:58:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:25,155 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:25,155 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:25,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 20:58:25,155 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:25,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1696427911, now seen corresponding path program 3 times [2021-06-05 20:58:25,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:25,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029231242] [2021-06-05 20:58:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:25,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:25,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029231242] [2021-06-05 20:58:25,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029231242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:25,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:25,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:25,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132504448] [2021-06-05 20:58:25,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:25,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:25,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:25,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:25,338 INFO L87 Difference]: Start difference. First operand 1912 states and 7806 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:25,416 INFO L93 Difference]: Finished difference Result 4302 states and 16515 transitions. [2021-06-05 20:58:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:25,416 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 [2021-06-05 20:58:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:25,429 INFO L225 Difference]: With dead ends: 4302 [2021-06-05 20:58:25,429 INFO L226 Difference]: Without dead ends: 4055 [2021-06-05 20:58:25,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2021-06-05 20:58:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 1940. [2021-06-05 20:58:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 4.0711707065497675) internal successors, (7894), 1939 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 7894 transitions. [2021-06-05 20:58:25,520 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 7894 transitions. Word has length 25 [2021-06-05 20:58:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:25,520 INFO L482 AbstractCegarLoop]: Abstraction has 1940 states and 7894 transitions. [2021-06-05 20:58:25,521 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) [2021-06-05 20:58:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 7894 transitions. [2021-06-05 20:58:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:25,525 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:25,525 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:25,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 20:58:25,525 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1008604635, now seen corresponding path program 4 times [2021-06-05 20:58:25,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:25,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565754419] [2021-06-05 20:58:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:25,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:25,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565754419] [2021-06-05 20:58:25,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565754419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:25,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:25,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:25,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461689232] [2021-06-05 20:58:25,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:25,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:25,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:25,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:25,656 INFO L87 Difference]: Start difference. First operand 1940 states and 7894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:25,756 INFO L93 Difference]: Finished difference Result 4340 states and 16640 transitions. [2021-06-05 20:58:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:25,783 INFO L225 Difference]: With dead ends: 4340 [2021-06-05 20:58:25,783 INFO L226 Difference]: Without dead ends: 4027 [2021-06-05 20:58:25,784 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2021-06-05 20:58:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 1912. [2021-06-05 20:58:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 4.077446363160649) internal successors, (7792), 1911 states have internal predecessors, (7792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 7792 transitions. [2021-06-05 20:58:25,843 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 7792 transitions. Word has length 25 [2021-06-05 20:58:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:25,843 INFO L482 AbstractCegarLoop]: Abstraction has 1912 states and 7792 transitions. [2021-06-05 20:58:25,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 7792 transitions. [2021-06-05 20:58:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:25,847 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:25,847 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:25,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 20:58:25,847 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 370441149, now seen corresponding path program 5 times [2021-06-05 20:58:25,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:25,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044576944] [2021-06-05 20:58:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:25,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:25,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044576944] [2021-06-05 20:58:25,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044576944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:25,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:25,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:25,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242513027] [2021-06-05 20:58:25,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:25,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:25,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:25,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:25,953 INFO L87 Difference]: Start difference. First operand 1912 states and 7792 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:26,037 INFO L93 Difference]: Finished difference Result 4462 states and 17119 transitions. [2021-06-05 20:58:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:26,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:26,050 INFO L225 Difference]: With dead ends: 4462 [2021-06-05 20:58:26,050 INFO L226 Difference]: Without dead ends: 4177 [2021-06-05 20:58:26,051 INFO L810 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 [2021-06-05 20:58:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2021-06-05 20:58:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 1991. [2021-06-05 20:58:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1990 states have (on average 4.049748743718593) internal successors, (8059), 1990 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 8059 transitions. [2021-06-05 20:58:26,124 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 8059 transitions. Word has length 25 [2021-06-05 20:58:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:26,124 INFO L482 AbstractCegarLoop]: Abstraction has 1991 states and 8059 transitions. [2021-06-05 20:58:26,124 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) [2021-06-05 20:58:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 8059 transitions. [2021-06-05 20:58:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:26,129 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:26,129 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:26,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 20:58:26,129 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash 668494107, now seen corresponding path program 6 times [2021-06-05 20:58:26,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:26,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414565273] [2021-06-05 20:58:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:26,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:26,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414565273] [2021-06-05 20:58:26,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414565273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:26,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:26,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:26,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957742372] [2021-06-05 20:58:26,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:26,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:26,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:26,248 INFO L87 Difference]: Start difference. First operand 1991 states and 8059 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:26,315 INFO L93 Difference]: Finished difference Result 4495 states and 17186 transitions. [2021-06-05 20:58:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:26,327 INFO L225 Difference]: With dead ends: 4495 [2021-06-05 20:58:26,327 INFO L226 Difference]: Without dead ends: 4068 [2021-06-05 20:58:26,327 INFO L810 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 [2021-06-05 20:58:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2021-06-05 20:58:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 1882. [2021-06-05 20:58:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.085061137692716) internal successors, (7684), 1881 states have internal predecessors, (7684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7684 transitions. [2021-06-05 20:58:26,412 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7684 transitions. Word has length 25 [2021-06-05 20:58:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:26,412 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7684 transitions. [2021-06-05 20:58:26,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7684 transitions. [2021-06-05 20:58:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:26,416 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:26,416 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:26,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 20:58:26,416 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 950924155, now seen corresponding path program 7 times [2021-06-05 20:58:26,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:26,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078375409] [2021-06-05 20:58:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:26,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:26,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078375409] [2021-06-05 20:58:26,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078375409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:26,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:26,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:26,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529033612] [2021-06-05 20:58:26,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:26,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:26,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:26,526 INFO L87 Difference]: Start difference. First operand 1882 states and 7684 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:26,586 INFO L93 Difference]: Finished difference Result 4324 states and 16616 transitions. [2021-06-05 20:58:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:26,599 INFO L225 Difference]: With dead ends: 4324 [2021-06-05 20:58:26,600 INFO L226 Difference]: Without dead ends: 4077 [2021-06-05 20:58:26,600 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2021-06-05 20:58:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 1948. [2021-06-05 20:58:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 4.076527991782229) internal successors, (7937), 1947 states have internal predecessors, (7937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 7937 transitions. [2021-06-05 20:58:26,664 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 7937 transitions. Word has length 25 [2021-06-05 20:58:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:26,664 INFO L482 AbstractCegarLoop]: Abstraction has 1948 states and 7937 transitions. [2021-06-05 20:58:26,664 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) [2021-06-05 20:58:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 7937 transitions. [2021-06-05 20:58:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:26,668 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:26,668 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:26,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 20:58:26,668 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash -681023011, now seen corresponding path program 8 times [2021-06-05 20:58:26,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:26,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133785497] [2021-06-05 20:58:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:26,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:26,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133785497] [2021-06-05 20:58:26,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133785497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:26,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:26,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:26,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958751420] [2021-06-05 20:58:26,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:26,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:26,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:26,765 INFO L87 Difference]: Start difference. First operand 1948 states and 7937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:26,827 INFO L93 Difference]: Finished difference Result 4395 states and 16855 transitions. [2021-06-05 20:58:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:26,827 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 [2021-06-05 20:58:26,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:26,838 INFO L225 Difference]: With dead ends: 4395 [2021-06-05 20:58:26,839 INFO L226 Difference]: Without dead ends: 4033 [2021-06-05 20:58:26,839 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-06-05 20:58:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 1904. [2021-06-05 20:58:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 4.079348397267473) internal successors, (7763), 1903 states have internal predecessors, (7763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 7763 transitions. [2021-06-05 20:58:26,899 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 7763 transitions. Word has length 25 [2021-06-05 20:58:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:26,899 INFO L482 AbstractCegarLoop]: Abstraction has 1904 states and 7763 transitions. [2021-06-05 20:58:26,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 7763 transitions. [2021-06-05 20:58:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:26,903 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:26,903 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:26,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 20:58:26,903 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1610144571, now seen corresponding path program 9 times [2021-06-05 20:58:26,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:26,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420891435] [2021-06-05 20:58:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:27,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:27,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420891435] [2021-06-05 20:58:27,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420891435] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:27,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:27,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:27,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712652664] [2021-06-05 20:58:27,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:27,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:27,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:27,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:27,006 INFO L87 Difference]: Start difference. First operand 1904 states and 7763 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:27,061 INFO L93 Difference]: Finished difference Result 4273 states and 16411 transitions. [2021-06-05 20:58:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:27,062 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 [2021-06-05 20:58:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:27,072 INFO L225 Difference]: With dead ends: 4273 [2021-06-05 20:58:27,072 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 20:58:27,072 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 20:58:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 1932. [2021-06-05 20:58:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 4.06576903158985) internal successors, (7851), 1931 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7851 transitions. [2021-06-05 20:58:27,133 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7851 transitions. Word has length 25 [2021-06-05 20:58:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:27,134 INFO L482 AbstractCegarLoop]: Abstraction has 1932 states and 7851 transitions. [2021-06-05 20:58:27,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7851 transitions. [2021-06-05 20:58:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:27,137 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:27,137 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:27,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 20:58:27,138 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash 41216029, now seen corresponding path program 10 times [2021-06-05 20:58:27,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:27,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803417259] [2021-06-05 20:58:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:27,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:27,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803417259] [2021-06-05 20:58:27,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803417259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:27,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:27,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:27,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967035904] [2021-06-05 20:58:27,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:27,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:27,244 INFO L87 Difference]: Start difference. First operand 1932 states and 7851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:27,317 INFO L93 Difference]: Finished difference Result 4309 states and 16531 transitions. [2021-06-05 20:58:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:27,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:27,329 INFO L225 Difference]: With dead ends: 4309 [2021-06-05 20:58:27,329 INFO L226 Difference]: Without dead ends: 3998 [2021-06-05 20:58:27,329 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-05 20:58:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 1904. [2021-06-05 20:58:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 4.0719915922228065) internal successors, (7749), 1903 states have internal predecessors, (7749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 7749 transitions. [2021-06-05 20:58:27,398 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 7749 transitions. Word has length 25 [2021-06-05 20:58:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:27,399 INFO L482 AbstractCegarLoop]: Abstraction has 1904 states and 7749 transitions. [2021-06-05 20:58:27,399 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) [2021-06-05 20:58:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 7749 transitions. [2021-06-05 20:58:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:27,402 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:27,403 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:27,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 20:58:27,403 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash -596947457, now seen corresponding path program 11 times [2021-06-05 20:58:27,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:27,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110288016] [2021-06-05 20:58:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:27,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:27,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110288016] [2021-06-05 20:58:27,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110288016] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:27,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:27,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:27,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802418997] [2021-06-05 20:58:27,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:27,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:27,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:27,496 INFO L87 Difference]: Start difference. First operand 1904 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:27,565 INFO L93 Difference]: Finished difference Result 4414 states and 16959 transitions. [2021-06-05 20:58:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:27,574 INFO L225 Difference]: With dead ends: 4414 [2021-06-05 20:58:27,574 INFO L226 Difference]: Without dead ends: 4131 [2021-06-05 20:58:27,574 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-06-05 20:58:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 1966. [2021-06-05 20:58:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 4.0539440203562345) internal successors, (7966), 1965 states have internal predecessors, (7966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7966 transitions. [2021-06-05 20:58:27,635 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7966 transitions. Word has length 25 [2021-06-05 20:58:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:27,635 INFO L482 AbstractCegarLoop]: Abstraction has 1966 states and 7966 transitions. [2021-06-05 20:58:27,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7966 transitions. [2021-06-05 20:58:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:27,639 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:27,639 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:27,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 20:58:27,640 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:27,640 INFO L82 PathProgramCache]: Analyzing trace with hash -950086947, now seen corresponding path program 12 times [2021-06-05 20:58:27,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:27,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002181236] [2021-06-05 20:58:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:27,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:27,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002181236] [2021-06-05 20:58:27,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002181236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:27,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:27,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:27,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493209796] [2021-06-05 20:58:27,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:27,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:27,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:27,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:27,732 INFO L87 Difference]: Start difference. First operand 1966 states and 7966 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:27,792 INFO L93 Difference]: Finished difference Result 4449 states and 17032 transitions. [2021-06-05 20:58:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:27,801 INFO L225 Difference]: With dead ends: 4449 [2021-06-05 20:58:27,801 INFO L226 Difference]: Without dead ends: 4047 [2021-06-05 20:58:27,802 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2021-06-05 20:58:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 1882. [2021-06-05 20:58:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.079213184476342) internal successors, (7673), 1881 states have internal predecessors, (7673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7673 transitions. [2021-06-05 20:58:27,859 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7673 transitions. Word has length 25 [2021-06-05 20:58:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:27,859 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7673 transitions. [2021-06-05 20:58:27,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7673 transitions. [2021-06-05 20:58:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:27,863 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:27,863 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:27,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 20:58:27,863 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 519414489, now seen corresponding path program 13 times [2021-06-05 20:58:27,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:27,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497143125] [2021-06-05 20:58:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:27,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:27,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497143125] [2021-06-05 20:58:27,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497143125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:27,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:27,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:27,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617315680] [2021-06-05 20:58:27,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:27,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:27,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:27,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:27,957 INFO L87 Difference]: Start difference. First operand 1882 states and 7673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:28,009 INFO L93 Difference]: Finished difference Result 4202 states and 16149 transitions. [2021-06-05 20:58:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:28,018 INFO L225 Difference]: With dead ends: 4202 [2021-06-05 20:58:28,018 INFO L226 Difference]: Without dead ends: 3955 [2021-06-05 20:58:28,018 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-06-05 20:58:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 1924. [2021-06-05 20:58:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 4.069682787311493) internal successors, (7826), 1923 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 7826 transitions. [2021-06-05 20:58:28,075 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 7826 transitions. Word has length 25 [2021-06-05 20:58:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:28,075 INFO L482 AbstractCegarLoop]: Abstraction has 1924 states and 7826 transitions. [2021-06-05 20:58:28,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 7826 transitions. [2021-06-05 20:58:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:28,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:28,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:28,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 20:58:28,079 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:28,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:28,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1070520261, now seen corresponding path program 14 times [2021-06-05 20:58:28,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:28,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191969488] [2021-06-05 20:58:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:28,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:28,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191969488] [2021-06-05 20:58:28,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191969488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:28,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:28,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:28,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217683534] [2021-06-05 20:58:28,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:28,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:28,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:28,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:28,171 INFO L87 Difference]: Start difference. First operand 1924 states and 7826 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:28,239 INFO L93 Difference]: Finished difference Result 4240 states and 16274 transitions. [2021-06-05 20:58:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:28,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:28,248 INFO L225 Difference]: With dead ends: 4240 [2021-06-05 20:58:28,248 INFO L226 Difference]: Without dead ends: 3927 [2021-06-05 20:58:28,249 INFO L810 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 [2021-06-05 20:58:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-06-05 20:58:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 1896. [2021-06-05 20:58:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.07598944591029) internal successors, (7724), 1895 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7724 transitions. [2021-06-05 20:58:28,305 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7724 transitions. Word has length 25 [2021-06-05 20:58:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:28,305 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7724 transitions. [2021-06-05 20:58:28,305 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) [2021-06-05 20:58:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7724 transitions. [2021-06-05 20:58:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:28,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:28,309 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:28,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 20:58:28,309 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:28,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:28,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1600477115, now seen corresponding path program 15 times [2021-06-05 20:58:28,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:28,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709489310] [2021-06-05 20:58:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:28,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:28,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709489310] [2021-06-05 20:58:28,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709489310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:28,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:28,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:28,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107480000] [2021-06-05 20:58:28,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:28,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:28,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:28,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:28,415 INFO L87 Difference]: Start difference. First operand 1896 states and 7724 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:28,472 INFO L93 Difference]: Finished difference Result 4200 states and 16130 transitions. [2021-06-05 20:58:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:28,472 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 [2021-06-05 20:58:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:28,480 INFO L225 Difference]: With dead ends: 4200 [2021-06-05 20:58:28,480 INFO L226 Difference]: Without dead ends: 3953 [2021-06-05 20:58:28,480 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-06-05 20:58:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 1924. [2021-06-05 20:58:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 4.062402496099844) internal successors, (7812), 1923 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 7812 transitions. [2021-06-05 20:58:28,536 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 7812 transitions. Word has length 25 [2021-06-05 20:58:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:28,536 INFO L482 AbstractCegarLoop]: Abstraction has 1924 states and 7812 transitions. [2021-06-05 20:58:28,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 7812 transitions. [2021-06-05 20:58:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:28,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:28,540 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:28,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 20:58:28,540 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:28,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:28,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1686192197, now seen corresponding path program 16 times [2021-06-05 20:58:28,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:28,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840525660] [2021-06-05 20:58:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:28,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:28,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840525660] [2021-06-05 20:58:28,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840525660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:28,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:28,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:28,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091679795] [2021-06-05 20:58:28,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:28,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:28,658 INFO L87 Difference]: Start difference. First operand 1924 states and 7812 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:28,731 INFO L93 Difference]: Finished difference Result 4236 states and 16250 transitions. [2021-06-05 20:58:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:28,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:28,740 INFO L225 Difference]: With dead ends: 4236 [2021-06-05 20:58:28,740 INFO L226 Difference]: Without dead ends: 3925 [2021-06-05 20:58:28,741 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2021-06-05 20:58:28,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 1896. [2021-06-05 20:58:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.068601583113456) internal successors, (7710), 1895 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7710 transitions. [2021-06-05 20:58:28,807 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7710 transitions. Word has length 25 [2021-06-05 20:58:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:28,807 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7710 transitions. [2021-06-05 20:58:28,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7710 transitions. [2021-06-05 20:58:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:28,811 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:28,811 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:28,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 20:58:28,811 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:28,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1277328227, now seen corresponding path program 17 times [2021-06-05 20:58:28,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:28,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454886173] [2021-06-05 20:58:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:28,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:28,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454886173] [2021-06-05 20:58:28,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454886173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:28,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:28,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:28,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455322089] [2021-06-05 20:58:28,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:28,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:28,909 INFO L87 Difference]: Start difference. First operand 1896 states and 7710 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:28,980 INFO L93 Difference]: Finished difference Result 4294 states and 16505 transitions. [2021-06-05 20:58:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:28,981 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 [2021-06-05 20:58:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:28,990 INFO L225 Difference]: With dead ends: 4294 [2021-06-05 20:58:28,990 INFO L226 Difference]: Without dead ends: 4009 [2021-06-05 20:58:28,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2021-06-05 20:58:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 1942. [2021-06-05 20:58:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 4.051004636785162) internal successors, (7863), 1941 states have internal predecessors, (7863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 7863 transitions. [2021-06-05 20:58:29,058 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 7863 transitions. Word has length 25 [2021-06-05 20:58:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:29,059 INFO L482 AbstractCegarLoop]: Abstraction has 1942 states and 7863 transitions. [2021-06-05 20:58:29,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 7863 transitions. [2021-06-05 20:58:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:29,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:29,062 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:29,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 20:58:29,063 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:29,063 INFO L82 PathProgramCache]: Analyzing trace with hash 974302075, now seen corresponding path program 18 times [2021-06-05 20:58:29,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:29,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713040864] [2021-06-05 20:58:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:29,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:29,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713040864] [2021-06-05 20:58:29,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713040864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:29,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:29,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:29,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948327298] [2021-06-05 20:58:29,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:29,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:29,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:29,158 INFO L87 Difference]: Start difference. First operand 1942 states and 7863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:29,234 INFO L93 Difference]: Finished difference Result 4292 states and 16454 transitions. [2021-06-05 20:58:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:29,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:29,243 INFO L225 Difference]: With dead ends: 4292 [2021-06-05 20:58:29,243 INFO L226 Difference]: Without dead ends: 3949 [2021-06-05 20:58:29,243 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2021-06-05 20:58:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 1882. [2021-06-05 20:58:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.075491759702286) internal successors, (7666), 1881 states have internal predecessors, (7666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7666 transitions. [2021-06-05 20:58:29,298 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7666 transitions. Word has length 25 [2021-06-05 20:58:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:29,298 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7666 transitions. [2021-06-05 20:58:29,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7666 transitions. [2021-06-05 20:58:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:29,301 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:29,301 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:29,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 20:58:29,302 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:29,302 INFO L82 PathProgramCache]: Analyzing trace with hash -372114945, now seen corresponding path program 19 times [2021-06-05 20:58:29,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:29,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469131638] [2021-06-05 20:58:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:29,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:29,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469131638] [2021-06-05 20:58:29,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469131638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:29,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:29,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:29,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375469628] [2021-06-05 20:58:29,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:29,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:29,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:29,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:29,393 INFO L87 Difference]: Start difference. First operand 1882 states and 7666 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:29,483 INFO L93 Difference]: Finished difference Result 4483 states and 17268 transitions. [2021-06-05 20:58:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:29,493 INFO L225 Difference]: With dead ends: 4483 [2021-06-05 20:58:29,493 INFO L226 Difference]: Without dead ends: 4198 [2021-06-05 20:58:29,493 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-06-05 20:58:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 1975. [2021-06-05 20:58:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 4.059777102330294) internal successors, (8014), 1974 states have internal predecessors, (8014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 8014 transitions. [2021-06-05 20:58:29,555 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 8014 transitions. Word has length 25 [2021-06-05 20:58:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:29,555 INFO L482 AbstractCegarLoop]: Abstraction has 1975 states and 8014 transitions. [2021-06-05 20:58:29,556 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) [2021-06-05 20:58:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 8014 transitions. [2021-06-05 20:58:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:29,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:29,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:29,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 20:58:29,560 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:29,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1879515357, now seen corresponding path program 20 times [2021-06-05 20:58:29,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:29,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527802037] [2021-06-05 20:58:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:29,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:29,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527802037] [2021-06-05 20:58:29,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527802037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:29,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:29,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:29,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328013142] [2021-06-05 20:58:29,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:29,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:29,647 INFO L87 Difference]: Start difference. First operand 1975 states and 8014 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:29,717 INFO L93 Difference]: Finished difference Result 4481 states and 17217 transitions. [2021-06-05 20:58:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:29,726 INFO L225 Difference]: With dead ends: 4481 [2021-06-05 20:58:29,726 INFO L226 Difference]: Without dead ends: 4152 [2021-06-05 20:58:29,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2021-06-05 20:58:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 1929. [2021-06-05 20:58:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 4.0653526970954355) internal successors, (7838), 1928 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 7838 transitions. [2021-06-05 20:58:29,781 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 7838 transitions. Word has length 25 [2021-06-05 20:58:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:29,781 INFO L482 AbstractCegarLoop]: Abstraction has 1929 states and 7838 transitions. [2021-06-05 20:58:29,781 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) [2021-06-05 20:58:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 7838 transitions. [2021-06-05 20:58:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:29,784 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:29,784 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:29,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 20:58:29,785 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash -436748451, now seen corresponding path program 21 times [2021-06-05 20:58:29,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:29,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928775390] [2021-06-05 20:58:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:29,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:29,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928775390] [2021-06-05 20:58:29,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928775390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:29,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:29,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:29,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049346308] [2021-06-05 20:58:29,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:29,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:29,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:29,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:29,866 INFO L87 Difference]: Start difference. First operand 1929 states and 7838 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:29,948 INFO L93 Difference]: Finished difference Result 4551 states and 17479 transitions. [2021-06-05 20:58:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:29,957 INFO L225 Difference]: With dead ends: 4551 [2021-06-05 20:58:29,957 INFO L226 Difference]: Without dead ends: 4266 [2021-06-05 20:58:29,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-06-05 20:58:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 2008. [2021-06-05 20:58:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2007 states have (on average 4.03836571998007) internal successors, (8105), 2007 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 8105 transitions. [2021-06-05 20:58:30,014 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 8105 transitions. Word has length 25 [2021-06-05 20:58:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:30,014 INFO L482 AbstractCegarLoop]: Abstraction has 2008 states and 8105 transitions. [2021-06-05 20:58:30,014 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) [2021-06-05 20:58:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 8105 transitions. [2021-06-05 20:58:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:30,017 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:30,017 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:30,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 20:58:30,017 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:30,018 INFO L82 PathProgramCache]: Analyzing trace with hash -992536739, now seen corresponding path program 22 times [2021-06-05 20:58:30,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:30,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963056967] [2021-06-05 20:58:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:30,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:30,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963056967] [2021-06-05 20:58:30,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963056967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:30,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:30,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:30,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123006807] [2021-06-05 20:58:30,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:30,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:30,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:30,125 INFO L87 Difference]: Start difference. First operand 2008 states and 8105 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:30,186 INFO L93 Difference]: Finished difference Result 4584 states and 17546 transitions. [2021-06-05 20:58:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:30,194 INFO L225 Difference]: With dead ends: 4584 [2021-06-05 20:58:30,195 INFO L226 Difference]: Without dead ends: 4187 [2021-06-05 20:58:30,195 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2021-06-05 20:58:30,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 1929. [2021-06-05 20:58:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 4.045124481327801) internal successors, (7799), 1928 states have internal predecessors, (7799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 7799 transitions. [2021-06-05 20:58:30,248 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 7799 transitions. Word has length 25 [2021-06-05 20:58:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:30,249 INFO L482 AbstractCegarLoop]: Abstraction has 1929 states and 7799 transitions. [2021-06-05 20:58:30,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 7799 transitions. [2021-06-05 20:58:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:30,252 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:30,252 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:30,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 20:58:30,253 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash 545599163, now seen corresponding path program 23 times [2021-06-05 20:58:30,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:30,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048418209] [2021-06-05 20:58:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:30,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:30,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048418209] [2021-06-05 20:58:30,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048418209] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:30,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:30,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:30,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198812689] [2021-06-05 20:58:30,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:30,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:30,346 INFO L87 Difference]: Start difference. First operand 1929 states and 7799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:30,428 INFO L93 Difference]: Finished difference Result 4530 states and 17379 transitions. [2021-06-05 20:58:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:30,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:30,437 INFO L225 Difference]: With dead ends: 4530 [2021-06-05 20:58:30,437 INFO L226 Difference]: Without dead ends: 4247 [2021-06-05 20:58:30,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2021-06-05 20:58:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 1991. [2021-06-05 20:58:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1990 states have (on average 4.028140703517588) internal successors, (8016), 1990 states have internal predecessors, (8016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 8016 transitions. [2021-06-05 20:58:30,494 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 8016 transitions. Word has length 25 [2021-06-05 20:58:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:30,494 INFO L482 AbstractCegarLoop]: Abstraction has 1991 states and 8016 transitions. [2021-06-05 20:58:30,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 8016 transitions. [2021-06-05 20:58:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:30,497 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:30,497 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:30,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 20:58:30,498 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:30,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:30,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1811790435, now seen corresponding path program 24 times [2021-06-05 20:58:30,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:30,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47648822] [2021-06-05 20:58:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:30,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:30,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47648822] [2021-06-05 20:58:30,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47648822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:30,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:30,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866395836] [2021-06-05 20:58:30,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:30,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:30,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:30,581 INFO L87 Difference]: Start difference. First operand 1991 states and 8016 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:30,648 INFO L93 Difference]: Finished difference Result 4565 states and 17452 transitions. [2021-06-05 20:58:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:30,648 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 [2021-06-05 20:58:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:30,656 INFO L225 Difference]: With dead ends: 4565 [2021-06-05 20:58:30,657 INFO L226 Difference]: Without dead ends: 4119 [2021-06-05 20:58:30,657 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-06-05 20:58:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 1863. [2021-06-05 20:58:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.085392051557465) internal successors, (7607), 1862 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7607 transitions. [2021-06-05 20:58:30,709 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7607 transitions. Word has length 25 [2021-06-05 20:58:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:30,710 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7607 transitions. [2021-06-05 20:58:30,710 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) [2021-06-05 20:58:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7607 transitions. [2021-06-05 20:58:30,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:30,713 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:30,713 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:30,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 20:58:30,713 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 565912923, now seen corresponding path program 25 times [2021-06-05 20:58:30,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:30,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834947071] [2021-06-05 20:58:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:30,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:30,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834947071] [2021-06-05 20:58:30,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834947071] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:30,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:30,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:30,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915971468] [2021-06-05 20:58:30,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:30,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:30,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:30,799 INFO L87 Difference]: Start difference. First operand 1863 states and 7607 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:30,857 INFO L93 Difference]: Finished difference Result 4231 states and 16189 transitions. [2021-06-05 20:58:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:30,857 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 [2021-06-05 20:58:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:30,865 INFO L225 Difference]: With dead ends: 4231 [2021-06-05 20:58:30,865 INFO L226 Difference]: Without dead ends: 3984 [2021-06-05 20:58:30,865 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-05 20:58:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 1949. [2021-06-05 20:58:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 4.078028747433265) internal successors, (7944), 1948 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 7944 transitions. [2021-06-05 20:58:30,918 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 7944 transitions. Word has length 25 [2021-06-05 20:58:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:30,918 INFO L482 AbstractCegarLoop]: Abstraction has 1949 states and 7944 transitions. [2021-06-05 20:58:30,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 7944 transitions. [2021-06-05 20:58:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:30,921 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:30,921 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:30,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 20:58:30,922 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:30,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:30,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1066034243, now seen corresponding path program 26 times [2021-06-05 20:58:30,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:30,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282836547] [2021-06-05 20:58:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:31,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:31,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282836547] [2021-06-05 20:58:31,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282836547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:31,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:31,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:31,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666146657] [2021-06-05 20:58:31,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:31,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:31,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:31,029 INFO L87 Difference]: Start difference. First operand 1949 states and 7944 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:31,096 INFO L93 Difference]: Finished difference Result 4302 states and 16428 transitions. [2021-06-05 20:58:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:31,104 INFO L225 Difference]: With dead ends: 4302 [2021-06-05 20:58:31,105 INFO L226 Difference]: Without dead ends: 3940 [2021-06-05 20:58:31,105 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-06-05 20:58:31,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 1905. [2021-06-05 20:58:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.080882352941177) internal successors, (7770), 1904 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7770 transitions. [2021-06-05 20:58:31,157 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7770 transitions. Word has length 25 [2021-06-05 20:58:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:31,157 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7770 transitions. [2021-06-05 20:58:31,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7770 transitions. [2021-06-05 20:58:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:31,160 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:31,160 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:31,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 20:58:31,160 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1811041401, now seen corresponding path program 27 times [2021-06-05 20:58:31,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:31,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271750196] [2021-06-05 20:58:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:31,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:31,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271750196] [2021-06-05 20:58:31,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271750196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:31,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:31,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:31,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961280918] [2021-06-05 20:58:31,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:31,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:31,242 INFO L87 Difference]: Start difference. First operand 1905 states and 7770 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:31,297 INFO L93 Difference]: Finished difference Result 4182 states and 15989 transitions. [2021-06-05 20:58:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:31,306 INFO L225 Difference]: With dead ends: 4182 [2021-06-05 20:58:31,306 INFO L226 Difference]: Without dead ends: 3935 [2021-06-05 20:58:31,306 INFO L810 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 [2021-06-05 20:58:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-05 20:58:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 1933. [2021-06-05 20:58:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.067287784679089) internal successors, (7858), 1932 states have internal predecessors, (7858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7858 transitions. [2021-06-05 20:58:31,358 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7858 transitions. Word has length 25 [2021-06-05 20:58:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:31,359 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7858 transitions. [2021-06-05 20:58:31,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7858 transitions. [2021-06-05 20:58:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:31,361 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:31,361 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:31,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 20:58:31,362 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:31,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash 221106651, now seen corresponding path program 28 times [2021-06-05 20:58:31,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:31,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189099360] [2021-06-05 20:58:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:31,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:31,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189099360] [2021-06-05 20:58:31,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189099360] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:31,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:31,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:31,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529181632] [2021-06-05 20:58:31,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:31,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:31,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:31,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:31,447 INFO L87 Difference]: Start difference. First operand 1933 states and 7858 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:31,527 INFO L93 Difference]: Finished difference Result 4220 states and 16114 transitions. [2021-06-05 20:58:31,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:31,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:31,556 INFO L225 Difference]: With dead ends: 4220 [2021-06-05 20:58:31,556 INFO L226 Difference]: Without dead ends: 3907 [2021-06-05 20:58:31,557 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-06-05 20:58:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 1905. [2021-06-05 20:58:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.073529411764706) internal successors, (7756), 1904 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7756 transitions. [2021-06-05 20:58:31,605 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7756 transitions. Word has length 25 [2021-06-05 20:58:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:31,605 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7756 transitions. [2021-06-05 20:58:31,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7756 transitions. [2021-06-05 20:58:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:31,607 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:31,608 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:31,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 20:58:31,608 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:31,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:31,608 INFO L82 PathProgramCache]: Analyzing trace with hash -417056835, now seen corresponding path program 29 times [2021-06-05 20:58:31,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:31,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793156687] [2021-06-05 20:58:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:31,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:31,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793156687] [2021-06-05 20:58:31,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793156687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:31,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:31,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:31,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125818567] [2021-06-05 20:58:31,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:31,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:31,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:31,689 INFO L87 Difference]: Start difference. First operand 1905 states and 7756 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:31,761 INFO L93 Difference]: Finished difference Result 4342 states and 16593 transitions. [2021-06-05 20:58:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:31,761 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 [2021-06-05 20:58:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:31,769 INFO L225 Difference]: With dead ends: 4342 [2021-06-05 20:58:31,770 INFO L226 Difference]: Without dead ends: 4057 [2021-06-05 20:58:31,770 INFO L810 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 [2021-06-05 20:58:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-06-05 20:58:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 1984. [2021-06-05 20:58:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 4.045890065557236) internal successors, (8023), 1983 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 8023 transitions. [2021-06-05 20:58:31,822 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 8023 transitions. Word has length 25 [2021-06-05 20:58:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:31,823 INFO L482 AbstractCegarLoop]: Abstraction has 1984 states and 8023 transitions. [2021-06-05 20:58:31,823 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) [2021-06-05 20:58:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 8023 transitions. [2021-06-05 20:58:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:31,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:31,826 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:31,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 20:58:31,826 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:31,826 INFO L82 PathProgramCache]: Analyzing trace with hash -119003877, now seen corresponding path program 30 times [2021-06-05 20:58:31,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:31,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515480714] [2021-06-05 20:58:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:31,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:31,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515480714] [2021-06-05 20:58:31,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515480714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:31,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:31,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:31,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551207128] [2021-06-05 20:58:31,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:31,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:31,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:31,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:31,906 INFO L87 Difference]: Start difference. First operand 1984 states and 8023 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:31,961 INFO L93 Difference]: Finished difference Result 4375 states and 16660 transitions. [2021-06-05 20:58:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:31,970 INFO L225 Difference]: With dead ends: 4375 [2021-06-05 20:58:31,970 INFO L226 Difference]: Without dead ends: 3948 [2021-06-05 20:58:31,970 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-06-05 20:58:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 1875. [2021-06-05 20:58:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.082710779082177) internal successors, (7651), 1874 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7651 transitions. [2021-06-05 20:58:32,022 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7651 transitions. Word has length 25 [2021-06-05 20:58:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:32,023 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7651 transitions. [2021-06-05 20:58:32,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7651 transitions. [2021-06-05 20:58:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:32,025 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:32,025 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:32,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 20:58:32,026 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1865092601, now seen corresponding path program 31 times [2021-06-05 20:58:32,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:32,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912170404] [2021-06-05 20:58:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:32,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:32,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912170404] [2021-06-05 20:58:32,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912170404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:32,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:32,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:32,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129163420] [2021-06-05 20:58:32,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:32,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:32,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:32,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:32,112 INFO L87 Difference]: Start difference. First operand 1875 states and 7651 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:32,167 INFO L93 Difference]: Finished difference Result 4132 states and 15781 transitions. [2021-06-05 20:58:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:32,175 INFO L225 Difference]: With dead ends: 4132 [2021-06-05 20:58:32,175 INFO L226 Difference]: Without dead ends: 3885 [2021-06-05 20:58:32,175 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2021-06-05 20:58:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 1935. [2021-06-05 20:58:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 4.07187176835574) internal successors, (7875), 1934 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 7875 transitions. [2021-06-05 20:58:32,226 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 7875 transitions. Word has length 25 [2021-06-05 20:58:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:32,226 INFO L482 AbstractCegarLoop]: Abstraction has 1935 states and 7875 transitions. [2021-06-05 20:58:32,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 7875 transitions. [2021-06-05 20:58:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:32,229 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:32,229 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:32,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 20:58:32,230 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:32,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:32,230 INFO L82 PathProgramCache]: Analyzing trace with hash 233145435, now seen corresponding path program 32 times [2021-06-05 20:58:32,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:32,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175241273] [2021-06-05 20:58:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:32,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:32,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175241273] [2021-06-05 20:58:32,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175241273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:32,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:32,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803121894] [2021-06-05 20:58:32,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:32,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:32,326 INFO L87 Difference]: Start difference. First operand 1935 states and 7875 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:32,383 INFO L93 Difference]: Finished difference Result 4203 states and 16020 transitions. [2021-06-05 20:58:32,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:32,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:32,391 INFO L225 Difference]: With dead ends: 4203 [2021-06-05 20:58:32,391 INFO L226 Difference]: Without dead ends: 3841 [2021-06-05 20:58:32,391 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-06-05 20:58:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 1891. [2021-06-05 20:58:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.0777777777777775) internal successors, (7707), 1890 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7707 transitions. [2021-06-05 20:58:32,441 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7707 transitions. Word has length 25 [2021-06-05 20:58:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:32,441 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7707 transitions. [2021-06-05 20:58:32,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7707 transitions. [2021-06-05 20:58:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:32,444 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:32,444 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:32,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 20:58:32,444 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -74705479, now seen corresponding path program 33 times [2021-06-05 20:58:32,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:32,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032408655] [2021-06-05 20:58:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:32,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:32,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032408655] [2021-06-05 20:58:32,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032408655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:32,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:32,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:32,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464992517] [2021-06-05 20:58:32,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:32,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:32,523 INFO L87 Difference]: Start difference. First operand 1891 states and 7707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:32,579 INFO L93 Difference]: Finished difference Result 4033 states and 15382 transitions. [2021-06-05 20:58:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:32,579 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 [2021-06-05 20:58:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:32,587 INFO L225 Difference]: With dead ends: 4033 [2021-06-05 20:58:32,587 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 20:58:32,587 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 20:58:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1907. [2021-06-05 20:58:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1906 states have (on average 4.068730325288563) internal successors, (7755), 1906 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7755 transitions. [2021-06-05 20:58:32,637 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7755 transitions. Word has length 25 [2021-06-05 20:58:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:32,637 INFO L482 AbstractCegarLoop]: Abstraction has 1907 states and 7755 transitions. [2021-06-05 20:58:32,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7755 transitions. [2021-06-05 20:58:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:32,640 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:32,640 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:32,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 20:58:32,640 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:32,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:32,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1622627813, now seen corresponding path program 34 times [2021-06-05 20:58:32,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:32,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029540457] [2021-06-05 20:58:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:32,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:32,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029540457] [2021-06-05 20:58:32,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029540457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:32,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:32,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:32,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632360491] [2021-06-05 20:58:32,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:32,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:32,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:32,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:32,723 INFO L87 Difference]: Start difference. First operand 1907 states and 7755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:32,793 INFO L93 Difference]: Finished difference Result 4033 states and 15366 transitions. [2021-06-05 20:58:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:32,801 INFO L225 Difference]: With dead ends: 4033 [2021-06-05 20:58:32,801 INFO L226 Difference]: Without dead ends: 3770 [2021-06-05 20:58:32,801 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2021-06-05 20:58:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 1891. [2021-06-05 20:58:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.073544973544974) internal successors, (7699), 1890 states have internal predecessors, (7699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7699 transitions. [2021-06-05 20:58:32,853 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7699 transitions. Word has length 25 [2021-06-05 20:58:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:32,853 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7699 transitions. [2021-06-05 20:58:32,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7699 transitions. [2021-06-05 20:58:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:32,857 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:32,857 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:32,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 20:58:32,857 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:32,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2034175997, now seen corresponding path program 35 times [2021-06-05 20:58:32,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:32,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609083640] [2021-06-05 20:58:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:32,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:32,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609083640] [2021-06-05 20:58:32,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609083640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:32,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:32,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:32,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529432117] [2021-06-05 20:58:32,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:32,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:32,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:32,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:32,967 INFO L87 Difference]: Start difference. First operand 1891 states and 7699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:33,034 INFO L93 Difference]: Finished difference Result 4132 states and 15757 transitions. [2021-06-05 20:58:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:33,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:33,042 INFO L225 Difference]: With dead ends: 4132 [2021-06-05 20:58:33,042 INFO L226 Difference]: Without dead ends: 3885 [2021-06-05 20:58:33,043 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2021-06-05 20:58:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 1935. [2021-06-05 20:58:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 4.0594622543950365) internal successors, (7851), 1934 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 7851 transitions. [2021-06-05 20:58:33,096 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 7851 transitions. Word has length 25 [2021-06-05 20:58:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:33,096 INFO L482 AbstractCegarLoop]: Abstraction has 1935 states and 7851 transitions. [2021-06-05 20:58:33,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 7851 transitions. [2021-06-05 20:58:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:33,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:33,099 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:33,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 20:58:33,100 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:33,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:33,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1029844059, now seen corresponding path program 36 times [2021-06-05 20:58:33,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:33,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26492079] [2021-06-05 20:58:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:33,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:33,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26492079] [2021-06-05 20:58:33,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26492079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:33,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:33,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:33,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369916937] [2021-06-05 20:58:33,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:33,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:33,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:33,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:33,184 INFO L87 Difference]: Start difference. First operand 1935 states and 7851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:33,233 INFO L93 Difference]: Finished difference Result 4203 states and 15996 transitions. [2021-06-05 20:58:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:33,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:33,241 INFO L225 Difference]: With dead ends: 4203 [2021-06-05 20:58:33,242 INFO L226 Difference]: Without dead ends: 3825 [2021-06-05 20:58:33,242 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2021-06-05 20:58:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 1875. [2021-06-05 20:58:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.078441835645678) internal successors, (7643), 1874 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7643 transitions. [2021-06-05 20:58:33,299 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7643 transitions. Word has length 25 [2021-06-05 20:58:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:33,299 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7643 transitions. [2021-06-05 20:58:33,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7643 transitions. [2021-06-05 20:58:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:33,302 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:33,302 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:33,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 20:58:33,302 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:33,303 INFO L82 PathProgramCache]: Analyzing trace with hash -528757417, now seen corresponding path program 37 times [2021-06-05 20:58:33,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:33,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917340104] [2021-06-05 20:58:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:33,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:33,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917340104] [2021-06-05 20:58:33,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917340104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:33,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:33,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:33,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309684173] [2021-06-05 20:58:33,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:33,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:33,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:33,380 INFO L87 Difference]: Start difference. First operand 1875 states and 7643 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:33,438 INFO L93 Difference]: Finished difference Result 4010 states and 15317 transitions. [2021-06-05 20:58:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:33,446 INFO L225 Difference]: With dead ends: 4010 [2021-06-05 20:58:33,446 INFO L226 Difference]: Without dead ends: 3763 [2021-06-05 20:58:33,446 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-05 20:58:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 1911. [2021-06-05 20:58:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 4.066492146596858) internal successors, (7767), 1910 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 7767 transitions. [2021-06-05 20:58:33,496 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 7767 transitions. Word has length 25 [2021-06-05 20:58:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:33,496 INFO L482 AbstractCegarLoop]: Abstraction has 1911 states and 7767 transitions. [2021-06-05 20:58:33,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 7767 transitions. [2021-06-05 20:58:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:33,499 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:33,499 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:33,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 20:58:33,499 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2118692167, now seen corresponding path program 38 times [2021-06-05 20:58:33,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:33,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923378627] [2021-06-05 20:58:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:33,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:33,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923378627] [2021-06-05 20:58:33,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923378627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:33,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:33,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:33,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488836627] [2021-06-05 20:58:33,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:33,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:33,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:33,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:33,575 INFO L87 Difference]: Start difference. First operand 1911 states and 7767 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:33,641 INFO L93 Difference]: Finished difference Result 4048 states and 15442 transitions. [2021-06-05 20:58:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:33,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:33,649 INFO L225 Difference]: With dead ends: 4048 [2021-06-05 20:58:33,649 INFO L226 Difference]: Without dead ends: 3735 [2021-06-05 20:58:33,650 INFO L810 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 [2021-06-05 20:58:33,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2021-06-05 20:58:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 1883. [2021-06-05 20:58:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.075982996811902) internal successors, (7671), 1882 states have internal predecessors, (7671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7671 transitions. [2021-06-05 20:58:33,699 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7671 transitions. Word has length 25 [2021-06-05 20:58:33,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:33,699 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7671 transitions. [2021-06-05 20:58:33,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7671 transitions. [2021-06-05 20:58:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:33,702 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:33,702 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:33,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 20:58:33,702 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash -735565383, now seen corresponding path program 39 times [2021-06-05 20:58:33,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:33,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404549144] [2021-06-05 20:58:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:33,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:33,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404549144] [2021-06-05 20:58:33,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404549144] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:33,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:33,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:33,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792507370] [2021-06-05 20:58:33,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:33,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:33,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:33,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:33,773 INFO L87 Difference]: Start difference. First operand 1883 states and 7671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:33,824 INFO L93 Difference]: Finished difference Result 3960 states and 15104 transitions. [2021-06-05 20:58:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:33,832 INFO L225 Difference]: With dead ends: 3960 [2021-06-05 20:58:33,832 INFO L226 Difference]: Without dead ends: 3713 [2021-06-05 20:58:33,832 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-06-05 20:58:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 1899. [2021-06-05 20:58:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 4.066912539515279) internal successors, (7719), 1898 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 7719 transitions. [2021-06-05 20:58:33,882 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 7719 transitions. Word has length 25 [2021-06-05 20:58:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:33,882 INFO L482 AbstractCegarLoop]: Abstraction has 1899 states and 7719 transitions. [2021-06-05 20:58:33,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 7719 transitions. [2021-06-05 20:58:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:33,885 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:33,885 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:33,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 20:58:33,885 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash 944931257, now seen corresponding path program 40 times [2021-06-05 20:58:33,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:33,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119930337] [2021-06-05 20:58:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:33,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:33,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119930337] [2021-06-05 20:58:33,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119930337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:33,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:33,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:33,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621194190] [2021-06-05 20:58:33,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:33,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:33,970 INFO L87 Difference]: Start difference. First operand 1899 states and 7719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:34,035 INFO L93 Difference]: Finished difference Result 3960 states and 15088 transitions. [2021-06-05 20:58:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:34,043 INFO L225 Difference]: With dead ends: 3960 [2021-06-05 20:58:34,043 INFO L226 Difference]: Without dead ends: 3697 [2021-06-05 20:58:34,043 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-06-05 20:58:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1883. [2021-06-05 20:58:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.07173219978746) internal successors, (7663), 1882 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7663 transitions. [2021-06-05 20:58:34,093 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7663 transitions. Word has length 25 [2021-06-05 20:58:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:34,093 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7663 transitions. [2021-06-05 20:58:34,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7663 transitions. [2021-06-05 20:58:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:34,095 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:34,095 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:34,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 20:58:34,096 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash 681596571, now seen corresponding path program 41 times [2021-06-05 20:58:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:34,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74725705] [2021-06-05 20:58:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:34,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:34,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74725705] [2021-06-05 20:58:34,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74725705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:34,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:34,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:34,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372710719] [2021-06-05 20:58:34,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:34,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:34,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:34,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:34,175 INFO L87 Difference]: Start difference. First operand 1883 states and 7663 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:34,240 INFO L93 Difference]: Finished difference Result 4048 states and 15454 transitions. [2021-06-05 20:58:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:34,248 INFO L225 Difference]: With dead ends: 4048 [2021-06-05 20:58:34,249 INFO L226 Difference]: Without dead ends: 3763 [2021-06-05 20:58:34,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-05 20:58:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 1911. [2021-06-05 20:58:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 4.058115183246073) internal successors, (7751), 1910 states have internal predecessors, (7751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 7751 transitions. [2021-06-05 20:58:34,330 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 7751 transitions. Word has length 25 [2021-06-05 20:58:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:34,330 INFO L482 AbstractCegarLoop]: Abstraction has 1911 states and 7751 transitions. [2021-06-05 20:58:34,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 7751 transitions. [2021-06-05 20:58:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:34,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:34,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:34,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 20:58:34,333 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:34,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:34,334 INFO L82 PathProgramCache]: Analyzing trace with hash -710547975, now seen corresponding path program 42 times [2021-06-05 20:58:34,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:34,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107421645] [2021-06-05 20:58:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:34,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:34,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107421645] [2021-06-05 20:58:34,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107421645] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:34,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:34,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:34,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743532451] [2021-06-05 20:58:34,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:34,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:34,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:34,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:34,474 INFO L87 Difference]: Start difference. First operand 1911 states and 7751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:34,545 INFO L93 Difference]: Finished difference Result 4010 states and 15273 transitions. [2021-06-05 20:58:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:34,546 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 [2021-06-05 20:58:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:34,554 INFO L225 Difference]: With dead ends: 4010 [2021-06-05 20:58:34,554 INFO L226 Difference]: Without dead ends: 3727 [2021-06-05 20:58:34,554 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-06-05 20:58:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 1875. [2021-06-05 20:58:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.076307363927428) internal successors, (7639), 1874 states have internal predecessors, (7639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7639 transitions. [2021-06-05 20:58:34,612 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7639 transitions. Word has length 25 [2021-06-05 20:58:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:34,612 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7639 transitions. [2021-06-05 20:58:34,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7639 transitions. [2021-06-05 20:58:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:34,615 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:34,615 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:34,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 20:58:34,615 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1586809853, now seen corresponding path program 43 times [2021-06-05 20:58:34,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:34,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047174121] [2021-06-05 20:58:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:34,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:34,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047174121] [2021-06-05 20:58:34,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047174121] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:34,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:34,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:34,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745580781] [2021-06-05 20:58:34,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:34,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:34,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:34,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:34,695 INFO L87 Difference]: Start difference. First operand 1875 states and 7639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:34,762 INFO L93 Difference]: Finished difference Result 4220 states and 16140 transitions. [2021-06-05 20:58:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:34,771 INFO L225 Difference]: With dead ends: 4220 [2021-06-05 20:58:34,771 INFO L226 Difference]: Without dead ends: 3935 [2021-06-05 20:58:34,771 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-05 20:58:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 1933. [2021-06-05 20:58:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.066252587991719) internal successors, (7856), 1932 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7856 transitions. [2021-06-05 20:58:34,835 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7856 transitions. Word has length 25 [2021-06-05 20:58:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:34,835 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7856 transitions. [2021-06-05 20:58:34,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7856 transitions. [2021-06-05 20:58:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:34,839 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:34,839 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:34,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 20:58:34,839 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash 194665307, now seen corresponding path program 44 times [2021-06-05 20:58:34,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:34,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737210793] [2021-06-05 20:58:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:34,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:34,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737210793] [2021-06-05 20:58:34,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737210793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:34,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:34,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:34,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263606467] [2021-06-05 20:58:34,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:34,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:34,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:34,915 INFO L87 Difference]: Start difference. First operand 1933 states and 7856 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:34,980 INFO L93 Difference]: Finished difference Result 4182 states and 15959 transitions. [2021-06-05 20:58:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:34,981 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 [2021-06-05 20:58:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:34,989 INFO L225 Difference]: With dead ends: 4182 [2021-06-05 20:58:34,989 INFO L226 Difference]: Without dead ends: 3907 [2021-06-05 20:58:34,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-06-05 20:58:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 1905. [2021-06-05 20:58:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.072478991596639) internal successors, (7754), 1904 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7754 transitions. [2021-06-05 20:58:35,041 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7754 transitions. Word has length 25 [2021-06-05 20:58:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:35,041 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7754 transitions. [2021-06-05 20:58:35,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7754 transitions. [2021-06-05 20:58:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:35,044 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:35,044 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:35,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 20:58:35,044 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:35,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1503508261, now seen corresponding path program 45 times [2021-06-05 20:58:35,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:35,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620435089] [2021-06-05 20:58:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:35,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:35,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620435089] [2021-06-05 20:58:35,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620435089] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:35,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:35,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:35,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164189690] [2021-06-05 20:58:35,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:35,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:35,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:35,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:35,115 INFO L87 Difference]: Start difference. First operand 1905 states and 7754 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:35,176 INFO L93 Difference]: Finished difference Result 4342 states and 16591 transitions. [2021-06-05 20:58:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:35,177 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 [2021-06-05 20:58:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:35,185 INFO L225 Difference]: With dead ends: 4342 [2021-06-05 20:58:35,185 INFO L226 Difference]: Without dead ends: 4057 [2021-06-05 20:58:35,185 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:35,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-06-05 20:58:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 1984. [2021-06-05 20:58:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 4.044881492687847) internal successors, (8021), 1983 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 8021 transitions. [2021-06-05 20:58:35,238 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 8021 transitions. Word has length 25 [2021-06-05 20:58:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:35,238 INFO L482 AbstractCegarLoop]: Abstraction has 1984 states and 8021 transitions. [2021-06-05 20:58:35,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 8021 transitions. [2021-06-05 20:58:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:35,241 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:35,241 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:35,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 20:58:35,241 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:35,241 INFO L82 PathProgramCache]: Analyzing trace with hash -771425957, now seen corresponding path program 46 times [2021-06-05 20:58:35,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:35,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065905057] [2021-06-05 20:58:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:35,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:35,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065905057] [2021-06-05 20:58:35,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065905057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:35,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:35,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:35,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827867060] [2021-06-05 20:58:35,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:35,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:35,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:35,320 INFO L87 Difference]: Start difference. First operand 1984 states and 8021 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:35,376 INFO L93 Difference]: Finished difference Result 4375 states and 16658 transitions. [2021-06-05 20:58:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:35,385 INFO L225 Difference]: With dead ends: 4375 [2021-06-05 20:58:35,385 INFO L226 Difference]: Without dead ends: 3978 [2021-06-05 20:58:35,386 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2021-06-05 20:58:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 1905. [2021-06-05 20:58:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.05672268907563) internal successors, (7724), 1904 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7724 transitions. [2021-06-05 20:58:35,438 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7724 transitions. Word has length 25 [2021-06-05 20:58:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:35,438 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7724 transitions. [2021-06-05 20:58:35,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7724 transitions. [2021-06-05 20:58:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:35,441 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:35,441 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:35,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 20:58:35,441 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1139250887, now seen corresponding path program 47 times [2021-06-05 20:58:35,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:35,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310086369] [2021-06-05 20:58:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:35,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:35,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310086369] [2021-06-05 20:58:35,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310086369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:35,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:35,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:35,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399048018] [2021-06-05 20:58:35,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:35,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:35,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:35,524 INFO L87 Difference]: Start difference. First operand 1905 states and 7724 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:35,591 INFO L93 Difference]: Finished difference Result 4231 states and 16121 transitions. [2021-06-05 20:58:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:35,593 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 [2021-06-05 20:58:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:35,602 INFO L225 Difference]: With dead ends: 4231 [2021-06-05 20:58:35,602 INFO L226 Difference]: Without dead ends: 3984 [2021-06-05 20:58:35,602 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-05 20:58:35,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 1949. [2021-06-05 20:58:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 4.04312114989733) internal successors, (7876), 1948 states have internal predecessors, (7876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 7876 transitions. [2021-06-05 20:58:35,655 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 7876 transitions. Word has length 25 [2021-06-05 20:58:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:35,655 INFO L482 AbstractCegarLoop]: Abstraction has 1949 states and 7876 transitions. [2021-06-05 20:58:35,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 7876 transitions. [2021-06-05 20:58:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:35,658 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:35,658 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:35,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 20:58:35,658 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2086197403, now seen corresponding path program 48 times [2021-06-05 20:58:35,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:35,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009876217] [2021-06-05 20:58:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:35,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:35,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009876217] [2021-06-05 20:58:35,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009876217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:35,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:35,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:35,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121842292] [2021-06-05 20:58:35,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:35,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:35,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:35,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:35,755 INFO L87 Difference]: Start difference. First operand 1949 states and 7876 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:35,812 INFO L93 Difference]: Finished difference Result 4302 states and 16360 transitions. [2021-06-05 20:58:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:35,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:35,820 INFO L225 Difference]: With dead ends: 4302 [2021-06-05 20:58:35,821 INFO L226 Difference]: Without dead ends: 3898 [2021-06-05 20:58:35,821 INFO L810 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 [2021-06-05 20:58:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-05 20:58:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 1863. [2021-06-05 20:58:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.082169709989259) internal successors, (7601), 1862 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7601 transitions. [2021-06-05 20:58:35,872 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7601 transitions. Word has length 25 [2021-06-05 20:58:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:35,872 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7601 transitions. [2021-06-05 20:58:35,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7601 transitions. [2021-06-05 20:58:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:35,874 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:35,875 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:35,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 20:58:35,875 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1940815897, now seen corresponding path program 49 times [2021-06-05 20:58:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:35,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804029891] [2021-06-05 20:58:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:35,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:35,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804029891] [2021-06-05 20:58:35,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804029891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:35,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:35,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:35,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332944024] [2021-06-05 20:58:35,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:35,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:35,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:35,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:35,960 INFO L87 Difference]: Start difference. First operand 1863 states and 7601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:36,015 INFO L93 Difference]: Finished difference Result 4165 states and 15971 transitions. [2021-06-05 20:58:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:36,015 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 [2021-06-05 20:58:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:36,023 INFO L225 Difference]: With dead ends: 4165 [2021-06-05 20:58:36,024 INFO L226 Difference]: Without dead ends: 3918 [2021-06-05 20:58:36,024 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-06-05 20:58:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 1937. [2021-06-05 20:58:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 4.077479338842975) internal successors, (7894), 1936 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 7894 transitions. [2021-06-05 20:58:36,096 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 7894 transitions. Word has length 25 [2021-06-05 20:58:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:36,096 INFO L482 AbstractCegarLoop]: Abstraction has 1937 states and 7894 transitions. [2021-06-05 20:58:36,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 7894 transitions. [2021-06-05 20:58:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:36,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:36,099 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:36,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 20:58:36,099 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:36,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:36,099 INFO L82 PathProgramCache]: Analyzing trace with hash 308868731, now seen corresponding path program 50 times [2021-06-05 20:58:36,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:36,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193468125] [2021-06-05 20:58:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:36,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:36,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193468125] [2021-06-05 20:58:36,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193468125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:36,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:36,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:36,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713452617] [2021-06-05 20:58:36,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:36,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:36,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:36,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:36,183 INFO L87 Difference]: Start difference. First operand 1937 states and 7894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:36,248 INFO L93 Difference]: Finished difference Result 4236 states and 16210 transitions. [2021-06-05 20:58:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:36,249 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 [2021-06-05 20:58:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:36,256 INFO L225 Difference]: With dead ends: 4236 [2021-06-05 20:58:36,257 INFO L226 Difference]: Without dead ends: 3874 [2021-06-05 20:58:36,257 INFO L810 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 [2021-06-05 20:58:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-06-05 20:58:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 1893. [2021-06-05 20:58:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.080338266384778) internal successors, (7720), 1892 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7720 transitions. [2021-06-05 20:58:36,308 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7720 transitions. Word has length 25 [2021-06-05 20:58:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:36,309 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7720 transitions. [2021-06-05 20:58:36,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7720 transitions. [2021-06-05 20:58:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:36,312 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:36,312 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:36,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 20:58:36,312 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1694930983, now seen corresponding path program 51 times [2021-06-05 20:58:36,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:36,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339716781] [2021-06-05 20:58:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:36,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:36,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339716781] [2021-06-05 20:58:36,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339716781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:36,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:36,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:36,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327597751] [2021-06-05 20:58:36,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:36,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:36,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:36,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:36,397 INFO L87 Difference]: Start difference. First operand 1893 states and 7720 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:36,457 INFO L93 Difference]: Finished difference Result 4114 states and 15766 transitions. [2021-06-05 20:58:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:36,465 INFO L225 Difference]: With dead ends: 4114 [2021-06-05 20:58:36,465 INFO L226 Difference]: Without dead ends: 3867 [2021-06-05 20:58:36,465 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-06-05 20:58:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 1921. [2021-06-05 20:58:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 4.066666666666666) internal successors, (7808), 1920 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 7808 transitions. [2021-06-05 20:58:36,516 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 7808 transitions. Word has length 25 [2021-06-05 20:58:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:36,516 INFO L482 AbstractCegarLoop]: Abstraction has 1921 states and 7808 transitions. [2021-06-05 20:58:36,516 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) [2021-06-05 20:58:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 7808 transitions. [2021-06-05 20:58:36,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:36,519 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:36,519 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:36,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 20:58:36,519 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:36,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1031107771, now seen corresponding path program 52 times [2021-06-05 20:58:36,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:36,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949092793] [2021-06-05 20:58:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:36,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:36,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949092793] [2021-06-05 20:58:36,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949092793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:36,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:36,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:36,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756325422] [2021-06-05 20:58:36,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:36,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:36,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:36,606 INFO L87 Difference]: Start difference. First operand 1921 states and 7808 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:36,684 INFO L93 Difference]: Finished difference Result 4150 states and 15886 transitions. [2021-06-05 20:58:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:36,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:36,693 INFO L225 Difference]: With dead ends: 4150 [2021-06-05 20:58:36,693 INFO L226 Difference]: Without dead ends: 3839 [2021-06-05 20:58:36,693 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-06-05 20:58:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 1893. [2021-06-05 20:58:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.072938689217759) internal successors, (7706), 1892 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7706 transitions. [2021-06-05 20:58:36,747 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7706 transitions. Word has length 25 [2021-06-05 20:58:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:36,747 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7706 transitions. [2021-06-05 20:58:36,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7706 transitions. [2021-06-05 20:58:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:36,750 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:36,750 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:36,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 20:58:36,750 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash 392944285, now seen corresponding path program 53 times [2021-06-05 20:58:36,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:36,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534238853] [2021-06-05 20:58:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:36,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:36,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534238853] [2021-06-05 20:58:36,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534238853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:36,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:36,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:36,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807437670] [2021-06-05 20:58:36,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:36,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:36,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:36,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:36,853 INFO L87 Difference]: Start difference. First operand 1893 states and 7706 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:36,933 INFO L93 Difference]: Finished difference Result 4255 states and 16314 transitions. [2021-06-05 20:58:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:36,934 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 [2021-06-05 20:58:36,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:36,942 INFO L225 Difference]: With dead ends: 4255 [2021-06-05 20:58:36,942 INFO L226 Difference]: Without dead ends: 3972 [2021-06-05 20:58:36,942 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2021-06-05 20:58:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 1955. [2021-06-05 20:58:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 4.054759467758444) internal successors, (7923), 1954 states have internal predecessors, (7923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 7923 transitions. [2021-06-05 20:58:36,995 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 7923 transitions. Word has length 25 [2021-06-05 20:58:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:36,995 INFO L482 AbstractCegarLoop]: Abstraction has 1955 states and 7923 transitions. [2021-06-05 20:58:36,995 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) [2021-06-05 20:58:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 7923 transitions. [2021-06-05 20:58:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:36,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:36,998 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:36,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 20:58:36,998 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash 39804795, now seen corresponding path program 54 times [2021-06-05 20:58:36,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:36,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044268857] [2021-06-05 20:58:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:37,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:37,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044268857] [2021-06-05 20:58:37,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044268857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:37,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:37,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:37,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279963288] [2021-06-05 20:58:37,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:37,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:37,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:37,108 INFO L87 Difference]: Start difference. First operand 1955 states and 7923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:37,205 INFO L93 Difference]: Finished difference Result 4290 states and 16387 transitions. [2021-06-05 20:58:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:37,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:37,213 INFO L225 Difference]: With dead ends: 4290 [2021-06-05 20:58:37,213 INFO L226 Difference]: Without dead ends: 3888 [2021-06-05 20:58:37,214 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-05 20:58:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 1871. [2021-06-05 20:58:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 4.081818181818182) internal successors, (7633), 1870 states have internal predecessors, (7633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 7633 transitions. [2021-06-05 20:58:37,267 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 7633 transitions. Word has length 25 [2021-06-05 20:58:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:37,267 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 7633 transitions. [2021-06-05 20:58:37,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 7633 transitions. [2021-06-05 20:58:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:37,270 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:37,270 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:37,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 20:58:37,270 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:37,271 INFO L82 PathProgramCache]: Analyzing trace with hash -644549637, now seen corresponding path program 55 times [2021-06-05 20:58:37,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:37,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642918433] [2021-06-05 20:58:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:37,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:37,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642918433] [2021-06-05 20:58:37,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642918433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:37,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:37,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:37,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705661317] [2021-06-05 20:58:37,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:37,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:37,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:37,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:37,349 INFO L87 Difference]: Start difference. First operand 1871 states and 7633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:37,407 INFO L93 Difference]: Finished difference Result 4093 states and 15651 transitions. [2021-06-05 20:58:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:37,415 INFO L225 Difference]: With dead ends: 4093 [2021-06-05 20:58:37,416 INFO L226 Difference]: Without dead ends: 3846 [2021-06-05 20:58:37,416 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-06-05 20:58:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 1931. [2021-06-05 20:58:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 4.070984455958549) internal successors, (7857), 1930 states have internal predecessors, (7857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 7857 transitions. [2021-06-05 20:58:37,468 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 7857 transitions. Word has length 25 [2021-06-05 20:58:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:37,468 INFO L482 AbstractCegarLoop]: Abstraction has 1931 states and 7857 transitions. [2021-06-05 20:58:37,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 7857 transitions. [2021-06-05 20:58:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:37,471 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:37,471 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:37,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 20:58:37,471 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2018470493, now seen corresponding path program 56 times [2021-06-05 20:58:37,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:37,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525180678] [2021-06-05 20:58:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:37,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:37,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525180678] [2021-06-05 20:58:37,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525180678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:37,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:37,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:37,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858540134] [2021-06-05 20:58:37,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:37,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:37,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:37,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:37,551 INFO L87 Difference]: Start difference. First operand 1931 states and 7857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:37,609 INFO L93 Difference]: Finished difference Result 4164 states and 15890 transitions. [2021-06-05 20:58:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:37,609 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 [2021-06-05 20:58:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:37,617 INFO L225 Difference]: With dead ends: 4164 [2021-06-05 20:58:37,617 INFO L226 Difference]: Without dead ends: 3802 [2021-06-05 20:58:37,617 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2021-06-05 20:58:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 1887. [2021-06-05 20:58:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 4.076882290562036) internal successors, (7689), 1886 states have internal predecessors, (7689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 7689 transitions. [2021-06-05 20:58:37,670 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 7689 transitions. Word has length 25 [2021-06-05 20:58:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:37,670 INFO L482 AbstractCegarLoop]: Abstraction has 1887 states and 7689 transitions. [2021-06-05 20:58:37,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 7689 transitions. [2021-06-05 20:58:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:37,673 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:37,673 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:37,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 20:58:37,673 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:37,674 INFO L82 PathProgramCache]: Analyzing trace with hash -317417511, now seen corresponding path program 57 times [2021-06-05 20:58:37,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:37,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832208244] [2021-06-05 20:58:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:37,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:37,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832208244] [2021-06-05 20:58:37,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832208244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:37,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:37,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:37,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805151309] [2021-06-05 20:58:37,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:37,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:37,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:37,745 INFO L87 Difference]: Start difference. First operand 1887 states and 7689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:37,820 INFO L93 Difference]: Finished difference Result 3994 states and 15252 transitions. [2021-06-05 20:58:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:37,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:37,828 INFO L225 Difference]: With dead ends: 3994 [2021-06-05 20:58:37,828 INFO L226 Difference]: Without dead ends: 3747 [2021-06-05 20:58:37,828 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-06-05 20:58:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 1903. [2021-06-05 20:58:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.0678233438485805) internal successors, (7737), 1902 states have internal predecessors, (7737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7737 transitions. [2021-06-05 20:58:37,881 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7737 transitions. Word has length 25 [2021-06-05 20:58:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:37,881 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7737 transitions. [2021-06-05 20:58:37,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7737 transitions. [2021-06-05 20:58:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:37,884 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:37,884 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:37,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 20:58:37,884 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:37,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1865339845, now seen corresponding path program 58 times [2021-06-05 20:58:37,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:37,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681015266] [2021-06-05 20:58:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:37,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:37,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681015266] [2021-06-05 20:58:37,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681015266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:37,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:37,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:37,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570401697] [2021-06-05 20:58:37,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:37,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:37,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:37,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:37,959 INFO L87 Difference]: Start difference. First operand 1903 states and 7737 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:38,029 INFO L93 Difference]: Finished difference Result 3994 states and 15236 transitions. [2021-06-05 20:58:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:38,036 INFO L225 Difference]: With dead ends: 3994 [2021-06-05 20:58:38,037 INFO L226 Difference]: Without dead ends: 3731 [2021-06-05 20:58:38,037 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-06-05 20:58:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 1887. [2021-06-05 20:58:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 4.072640509013786) internal successors, (7681), 1886 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 7681 transitions. [2021-06-05 20:58:38,088 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 7681 transitions. Word has length 25 [2021-06-05 20:58:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:38,088 INFO L482 AbstractCegarLoop]: Abstraction has 1887 states and 7681 transitions. [2021-06-05 20:58:38,088 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) [2021-06-05 20:58:38,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 7681 transitions. [2021-06-05 20:58:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:38,091 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:38,091 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:38,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 20:58:38,091 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1791463965, now seen corresponding path program 59 times [2021-06-05 20:58:38,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:38,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583480502] [2021-06-05 20:58:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:38,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:38,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583480502] [2021-06-05 20:58:38,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583480502] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:38,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:38,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:38,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751440193] [2021-06-05 20:58:38,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:38,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:38,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:38,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:38,174 INFO L87 Difference]: Start difference. First operand 1887 states and 7681 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:38,251 INFO L93 Difference]: Finished difference Result 4093 states and 15627 transitions. [2021-06-05 20:58:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:38,251 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 [2021-06-05 20:58:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:38,259 INFO L225 Difference]: With dead ends: 4093 [2021-06-05 20:58:38,259 INFO L226 Difference]: Without dead ends: 3846 [2021-06-05 20:58:38,260 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-06-05 20:58:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 1931. [2021-06-05 20:58:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 4.058549222797928) internal successors, (7833), 1930 states have internal predecessors, (7833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 7833 transitions. [2021-06-05 20:58:38,310 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 7833 transitions. Word has length 25 [2021-06-05 20:58:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:38,310 INFO L482 AbstractCegarLoop]: Abstraction has 1931 states and 7833 transitions. [2021-06-05 20:58:38,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 7833 transitions. [2021-06-05 20:58:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:38,313 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:38,313 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:38,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 20:58:38,313 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:38,313 INFO L82 PathProgramCache]: Analyzing trace with hash 787132027, now seen corresponding path program 60 times [2021-06-05 20:58:38,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:38,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623451264] [2021-06-05 20:58:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:38,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:38,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623451264] [2021-06-05 20:58:38,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623451264] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:38,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:38,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:38,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149054912] [2021-06-05 20:58:38,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:38,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:38,394 INFO L87 Difference]: Start difference. First operand 1931 states and 7833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:38,461 INFO L93 Difference]: Finished difference Result 4164 states and 15866 transitions. [2021-06-05 20:58:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:38,461 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 [2021-06-05 20:58:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:38,469 INFO L225 Difference]: With dead ends: 4164 [2021-06-05 20:58:38,470 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 20:58:38,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 20:58:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1871. [2021-06-05 20:58:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 4.077540106951871) internal successors, (7625), 1870 states have internal predecessors, (7625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 7625 transitions. [2021-06-05 20:58:38,523 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 7625 transitions. Word has length 25 [2021-06-05 20:58:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:38,523 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 7625 transitions. [2021-06-05 20:58:38,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 7625 transitions. [2021-06-05 20:58:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:38,526 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:38,526 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:38,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 20:58:38,526 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:38,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1825079399, now seen corresponding path program 61 times [2021-06-05 20:58:38,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:38,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412983145] [2021-06-05 20:58:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:38,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:38,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412983145] [2021-06-05 20:58:38,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412983145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:38,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:38,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:38,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744082278] [2021-06-05 20:58:38,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:38,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:38,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:38,612 INFO L87 Difference]: Start difference. First operand 1871 states and 7625 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:38,667 INFO L93 Difference]: Finished difference Result 3967 states and 15177 transitions. [2021-06-05 20:58:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:38,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:38,675 INFO L225 Difference]: With dead ends: 3967 [2021-06-05 20:58:38,675 INFO L226 Difference]: Without dead ends: 3720 [2021-06-05 20:58:38,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-06-05 20:58:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1907. [2021-06-05 20:58:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1906 states have (on average 4.065582371458552) internal successors, (7749), 1906 states have internal predecessors, (7749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7749 transitions. [2021-06-05 20:58:38,729 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7749 transitions. Word has length 25 [2021-06-05 20:58:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:38,729 INFO L482 AbstractCegarLoop]: Abstraction has 1907 states and 7749 transitions. [2021-06-05 20:58:38,729 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) [2021-06-05 20:58:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7749 transitions. [2021-06-05 20:58:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:38,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:38,732 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:38,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 20:58:38,732 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:38,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:38,732 INFO L82 PathProgramCache]: Analyzing trace with hash 900959355, now seen corresponding path program 62 times [2021-06-05 20:58:38,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:38,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694796967] [2021-06-05 20:58:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:38,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:38,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694796967] [2021-06-05 20:58:38,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694796967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:38,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:38,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:38,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428200268] [2021-06-05 20:58:38,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:38,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:38,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:38,814 INFO L87 Difference]: Start difference. First operand 1907 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:38,881 INFO L93 Difference]: Finished difference Result 4003 states and 15297 transitions. [2021-06-05 20:58:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:38,889 INFO L225 Difference]: With dead ends: 4003 [2021-06-05 20:58:38,889 INFO L226 Difference]: Without dead ends: 3692 [2021-06-05 20:58:38,889 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-06-05 20:58:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 1879. [2021-06-05 20:58:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 4.075079872204473) internal successors, (7653), 1878 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 7653 transitions. [2021-06-05 20:58:38,940 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 7653 transitions. Word has length 25 [2021-06-05 20:58:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:38,940 INFO L482 AbstractCegarLoop]: Abstraction has 1879 states and 7653 transitions. [2021-06-05 20:58:38,941 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) [2021-06-05 20:58:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 7653 transitions. [2021-06-05 20:58:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:38,943 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:38,943 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:38,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 20:58:38,943 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash -744016773, now seen corresponding path program 63 times [2021-06-05 20:58:38,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:38,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871219714] [2021-06-05 20:58:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:39,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:39,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871219714] [2021-06-05 20:58:39,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871219714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:39,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:39,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:39,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25012070] [2021-06-05 20:58:39,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:39,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:39,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:39,016 INFO L87 Difference]: Start difference. First operand 1879 states and 7653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:39,067 INFO L93 Difference]: Finished difference Result 3919 states and 14969 transitions. [2021-06-05 20:58:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:39,075 INFO L225 Difference]: With dead ends: 3919 [2021-06-05 20:58:39,075 INFO L226 Difference]: Without dead ends: 3672 [2021-06-05 20:58:39,076 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-06-05 20:58:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 1895. [2021-06-05 20:58:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 4.065997888067582) internal successors, (7701), 1894 states have internal predecessors, (7701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 7701 transitions. [2021-06-05 20:58:39,125 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 7701 transitions. Word has length 25 [2021-06-05 20:58:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:39,125 INFO L482 AbstractCegarLoop]: Abstraction has 1895 states and 7701 transitions. [2021-06-05 20:58:39,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 7701 transitions. [2021-06-05 20:58:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:39,127 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:39,127 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:39,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 20:58:39,128 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 285287419, now seen corresponding path program 64 times [2021-06-05 20:58:39,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:39,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158577397] [2021-06-05 20:58:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:39,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:39,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158577397] [2021-06-05 20:58:39,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158577397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:39,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:39,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:39,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090664377] [2021-06-05 20:58:39,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:39,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:39,198 INFO L87 Difference]: Start difference. First operand 1895 states and 7701 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:39,269 INFO L93 Difference]: Finished difference Result 3919 states and 14953 transitions. [2021-06-05 20:58:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:39,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:39,277 INFO L225 Difference]: With dead ends: 3919 [2021-06-05 20:58:39,277 INFO L226 Difference]: Without dead ends: 3656 [2021-06-05 20:58:39,277 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-06-05 20:58:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1879. [2021-06-05 20:58:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 4.070820021299254) internal successors, (7645), 1878 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 7645 transitions. [2021-06-05 20:58:39,328 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 7645 transitions. Word has length 25 [2021-06-05 20:58:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:39,328 INFO L482 AbstractCegarLoop]: Abstraction has 1879 states and 7645 transitions. [2021-06-05 20:58:39,328 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) [2021-06-05 20:58:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 7645 transitions. [2021-06-05 20:58:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:39,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:39,330 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:39,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 20:58:39,331 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:39,331 INFO L82 PathProgramCache]: Analyzing trace with hash -593719203, now seen corresponding path program 65 times [2021-06-05 20:58:39,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:39,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411402585] [2021-06-05 20:58:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:39,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:39,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411402585] [2021-06-05 20:58:39,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411402585] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:39,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:39,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:39,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46956502] [2021-06-05 20:58:39,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:39,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:39,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:39,406 INFO L87 Difference]: Start difference. First operand 1879 states and 7645 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:39,488 INFO L93 Difference]: Finished difference Result 4003 states and 15309 transitions. [2021-06-05 20:58:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:39,496 INFO L225 Difference]: With dead ends: 4003 [2021-06-05 20:58:39,496 INFO L226 Difference]: Without dead ends: 3720 [2021-06-05 20:58:39,496 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-06-05 20:58:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1907. [2021-06-05 20:58:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1906 states have (on average 4.057187827911857) internal successors, (7733), 1906 states have internal predecessors, (7733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7733 transitions. [2021-06-05 20:58:39,544 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7733 transitions. Word has length 25 [2021-06-05 20:58:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:39,544 INFO L482 AbstractCegarLoop]: Abstraction has 1907 states and 7733 transitions. [2021-06-05 20:58:39,544 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) [2021-06-05 20:58:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7733 transitions. [2021-06-05 20:58:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:39,547 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:39,547 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:39,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 20:58:39,547 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:39,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1657911099, now seen corresponding path program 66 times [2021-06-05 20:58:39,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:39,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40222557] [2021-06-05 20:58:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:39,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:39,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40222557] [2021-06-05 20:58:39,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40222557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:39,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:39,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892593189] [2021-06-05 20:58:39,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:39,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:39,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:39,612 INFO L87 Difference]: Start difference. First operand 1907 states and 7733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:39,673 INFO L93 Difference]: Finished difference Result 3967 states and 15133 transitions. [2021-06-05 20:58:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:39,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:39,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:39,681 INFO L225 Difference]: With dead ends: 3967 [2021-06-05 20:58:39,681 INFO L226 Difference]: Without dead ends: 3684 [2021-06-05 20:58:39,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:39,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-05 20:58:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1871. [2021-06-05 20:58:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 4.075401069518716) internal successors, (7621), 1870 states have internal predecessors, (7621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 7621 transitions. [2021-06-05 20:58:39,731 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 7621 transitions. Word has length 25 [2021-06-05 20:58:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:39,731 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 7621 transitions. [2021-06-05 20:58:39,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 7621 transitions. [2021-06-05 20:58:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:39,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:39,734 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:39,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 20:58:39,734 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash 311494079, now seen corresponding path program 67 times [2021-06-05 20:58:39,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:39,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880728319] [2021-06-05 20:58:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:39,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:39,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880728319] [2021-06-05 20:58:39,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880728319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:39,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:39,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:39,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436594108] [2021-06-05 20:58:39,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:39,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:39,798 INFO L87 Difference]: Start difference. First operand 1871 states and 7621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:39,859 INFO L93 Difference]: Finished difference Result 4150 states and 15916 transitions. [2021-06-05 20:58:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:39,868 INFO L225 Difference]: With dead ends: 4150 [2021-06-05 20:58:39,868 INFO L226 Difference]: Without dead ends: 3867 [2021-06-05 20:58:39,868 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-06-05 20:58:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 1921. [2021-06-05 20:58:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 4.067708333333333) internal successors, (7810), 1920 states have internal predecessors, (7810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 7810 transitions. [2021-06-05 20:58:39,921 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 7810 transitions. Word has length 25 [2021-06-05 20:58:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:39,921 INFO L482 AbstractCegarLoop]: Abstraction has 1921 states and 7810 transitions. [2021-06-05 20:58:39,921 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) [2021-06-05 20:58:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 7810 transitions. [2021-06-05 20:58:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:39,924 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:39,924 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:39,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 20:58:39,924 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1731842915, now seen corresponding path program 68 times [2021-06-05 20:58:39,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:39,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614645341] [2021-06-05 20:58:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:39,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:39,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614645341] [2021-06-05 20:58:39,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614645341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:39,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:39,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:39,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279457350] [2021-06-05 20:58:39,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:39,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:39,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:39,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:39,987 INFO L87 Difference]: Start difference. First operand 1921 states and 7810 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:40,045 INFO L93 Difference]: Finished difference Result 4114 states and 15740 transitions. [2021-06-05 20:58:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:40,053 INFO L225 Difference]: With dead ends: 4114 [2021-06-05 20:58:40,054 INFO L226 Difference]: Without dead ends: 3839 [2021-06-05 20:58:40,054 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-06-05 20:58:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 1893. [2021-06-05 20:58:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.07399577167019) internal successors, (7708), 1892 states have internal predecessors, (7708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7708 transitions. [2021-06-05 20:58:40,107 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7708 transitions. Word has length 25 [2021-06-05 20:58:40,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:40,107 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7708 transitions. [2021-06-05 20:58:40,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7708 transitions. [2021-06-05 20:58:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:40,110 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:40,110 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:40,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 20:58:40,110 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1516143261, now seen corresponding path program 69 times [2021-06-05 20:58:40,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:40,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598487104] [2021-06-05 20:58:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:40,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:40,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598487104] [2021-06-05 20:58:40,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598487104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:40,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:40,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:40,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6257442] [2021-06-05 20:58:40,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:40,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:40,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:40,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:40,174 INFO L87 Difference]: Start difference. First operand 1893 states and 7708 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:40,231 INFO L93 Difference]: Finished difference Result 4255 states and 16316 transitions. [2021-06-05 20:58:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:40,239 INFO L225 Difference]: With dead ends: 4255 [2021-06-05 20:58:40,239 INFO L226 Difference]: Without dead ends: 3972 [2021-06-05 20:58:40,239 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2021-06-05 20:58:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 1955. [2021-06-05 20:58:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 4.055783009211873) internal successors, (7925), 1954 states have internal predecessors, (7925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 7925 transitions. [2021-06-05 20:58:40,290 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 7925 transitions. Word has length 25 [2021-06-05 20:58:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:40,290 INFO L482 AbstractCegarLoop]: Abstraction has 1955 states and 7925 transitions. [2021-06-05 20:58:40,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 7925 transitions. [2021-06-05 20:58:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:40,293 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:40,293 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:40,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 20:58:40,293 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:40,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1597033117, now seen corresponding path program 70 times [2021-06-05 20:58:40,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:40,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151476576] [2021-06-05 20:58:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:40,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:40,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151476576] [2021-06-05 20:58:40,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151476576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:40,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:40,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:40,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526313679] [2021-06-05 20:58:40,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:40,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:40,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:40,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:40,364 INFO L87 Difference]: Start difference. First operand 1955 states and 7925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:40,413 INFO L93 Difference]: Finished difference Result 4290 states and 16389 transitions. [2021-06-05 20:58:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:40,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:40,421 INFO L225 Difference]: With dead ends: 4290 [2021-06-05 20:58:40,421 INFO L226 Difference]: Without dead ends: 3910 [2021-06-05 20:58:40,421 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2021-06-05 20:58:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 1893. [2021-06-05 20:58:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.062367864693446) internal successors, (7686), 1892 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7686 transitions. [2021-06-05 20:58:40,471 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7686 transitions. Word has length 25 [2021-06-05 20:58:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:40,471 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7686 transitions. [2021-06-05 20:58:40,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7686 transitions. [2021-06-05 20:58:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:40,474 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:40,474 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:40,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 20:58:40,474 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:40,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1796476421, now seen corresponding path program 71 times [2021-06-05 20:58:40,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:40,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107648948] [2021-06-05 20:58:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:40,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:40,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107648948] [2021-06-05 20:58:40,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107648948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:40,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:40,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:40,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843718132] [2021-06-05 20:58:40,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:40,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:40,561 INFO L87 Difference]: Start difference. First operand 1893 states and 7686 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:40,625 INFO L93 Difference]: Finished difference Result 4165 states and 15915 transitions. [2021-06-05 20:58:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:40,625 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 [2021-06-05 20:58:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:40,633 INFO L225 Difference]: With dead ends: 4165 [2021-06-05 20:58:40,633 INFO L226 Difference]: Without dead ends: 3918 [2021-06-05 20:58:40,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-06-05 20:58:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 1937. [2021-06-05 20:58:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 4.0485537190082646) internal successors, (7838), 1936 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 7838 transitions. [2021-06-05 20:58:40,687 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 7838 transitions. Word has length 25 [2021-06-05 20:58:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:40,687 INFO L482 AbstractCegarLoop]: Abstraction has 1937 states and 7838 transitions. [2021-06-05 20:58:40,687 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) [2021-06-05 20:58:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 7838 transitions. [2021-06-05 20:58:40,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:40,690 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:40,690 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:40,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 20:58:40,690 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:40,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1428971869, now seen corresponding path program 72 times [2021-06-05 20:58:40,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:40,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262518929] [2021-06-05 20:58:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:40,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:40,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262518929] [2021-06-05 20:58:40,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262518929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:40,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:40,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:40,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316361435] [2021-06-05 20:58:40,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:40,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:40,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:40,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:40,769 INFO L87 Difference]: Start difference. First operand 1937 states and 7838 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:40,819 INFO L93 Difference]: Finished difference Result 4236 states and 16154 transitions. [2021-06-05 20:58:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:40,827 INFO L225 Difference]: With dead ends: 4236 [2021-06-05 20:58:40,827 INFO L226 Difference]: Without dead ends: 3844 [2021-06-05 20:58:40,827 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2021-06-05 20:58:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 1863. [2021-06-05 20:58:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.080021482277122) internal successors, (7597), 1862 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7597 transitions. [2021-06-05 20:58:40,877 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7597 transitions. Word has length 25 [2021-06-05 20:58:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:40,877 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7597 transitions. [2021-06-05 20:58:40,877 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) [2021-06-05 20:58:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7597 transitions. [2021-06-05 20:58:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:40,880 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:40,880 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:40,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 20:58:40,880 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash 554350519, now seen corresponding path program 73 times [2021-06-05 20:58:40,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:40,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765707832] [2021-06-05 20:58:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:40,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:40,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765707832] [2021-06-05 20:58:40,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765707832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:40,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:40,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:40,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480925382] [2021-06-05 20:58:40,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:40,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:40,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:40,973 INFO L87 Difference]: Start difference. First operand 1863 states and 7597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:41,024 INFO L93 Difference]: Finished difference Result 3934 states and 15077 transitions. [2021-06-05 20:58:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:41,024 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 [2021-06-05 20:58:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:41,057 INFO L225 Difference]: With dead ends: 3934 [2021-06-05 20:58:41,057 INFO L226 Difference]: Without dead ends: 3687 [2021-06-05 20:58:41,057 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2021-06-05 20:58:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 1909. [2021-06-05 20:58:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.072327044025157) internal successors, (7770), 1908 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7770 transitions. [2021-06-05 20:58:41,105 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7770 transitions. Word has length 25 [2021-06-05 20:58:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:41,106 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7770 transitions. [2021-06-05 20:58:41,106 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) [2021-06-05 20:58:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7770 transitions. [2021-06-05 20:58:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:41,108 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:41,108 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:41,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 20:58:41,109 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1035584231, now seen corresponding path program 74 times [2021-06-05 20:58:41,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:41,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869972297] [2021-06-05 20:58:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:41,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:41,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869972297] [2021-06-05 20:58:41,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869972297] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:41,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:41,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:41,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988363182] [2021-06-05 20:58:41,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:41,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:41,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:41,197 INFO L87 Difference]: Start difference. First operand 1909 states and 7770 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:41,257 INFO L93 Difference]: Finished difference Result 3972 states and 15202 transitions. [2021-06-05 20:58:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:41,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:41,265 INFO L225 Difference]: With dead ends: 3972 [2021-06-05 20:58:41,265 INFO L226 Difference]: Without dead ends: 3659 [2021-06-05 20:58:41,265 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-06-05 20:58:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 1881. [2021-06-05 20:58:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.078723404255319) internal successors, (7668), 1880 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7668 transitions. [2021-06-05 20:58:41,314 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7668 transitions. Word has length 25 [2021-06-05 20:58:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:41,314 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7668 transitions. [2021-06-05 20:58:41,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7668 transitions. [2021-06-05 20:58:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:41,317 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:41,317 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:41,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 20:58:41,317 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:41,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1635413145, now seen corresponding path program 75 times [2021-06-05 20:58:41,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:41,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722550626] [2021-06-05 20:58:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:41,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:41,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722550626] [2021-06-05 20:58:41,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722550626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:41,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:41,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:41,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348942215] [2021-06-05 20:58:41,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:41,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:41,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:41,404 INFO L87 Difference]: Start difference. First operand 1881 states and 7668 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:41,466 INFO L93 Difference]: Finished difference Result 3932 states and 15058 transitions. [2021-06-05 20:58:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:41,467 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 [2021-06-05 20:58:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:41,474 INFO L225 Difference]: With dead ends: 3932 [2021-06-05 20:58:41,475 INFO L226 Difference]: Without dead ends: 3685 [2021-06-05 20:58:41,475 INFO L810 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 [2021-06-05 20:58:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2021-06-05 20:58:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 1909. [2021-06-05 20:58:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.064989517819707) internal successors, (7756), 1908 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7756 transitions. [2021-06-05 20:58:41,524 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7756 transitions. Word has length 25 [2021-06-05 20:58:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:41,524 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7756 transitions. [2021-06-05 20:58:41,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7756 transitions. [2021-06-05 20:58:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:41,526 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:41,526 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:41,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 20:58:41,527 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1651256167, now seen corresponding path program 76 times [2021-06-05 20:58:41,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:41,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774844476] [2021-06-05 20:58:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:41,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:41,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774844476] [2021-06-05 20:58:41,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774844476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:41,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:41,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:41,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289115898] [2021-06-05 20:58:41,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:41,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:41,611 INFO L87 Difference]: Start difference. First operand 1909 states and 7756 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:41,672 INFO L93 Difference]: Finished difference Result 3968 states and 15178 transitions. [2021-06-05 20:58:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:41,680 INFO L225 Difference]: With dead ends: 3968 [2021-06-05 20:58:41,680 INFO L226 Difference]: Without dead ends: 3657 [2021-06-05 20:58:41,680 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2021-06-05 20:58:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 1881. [2021-06-05 20:58:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.071276595744681) internal successors, (7654), 1880 states have internal predecessors, (7654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7654 transitions. [2021-06-05 20:58:41,729 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7654 transitions. Word has length 25 [2021-06-05 20:58:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:41,729 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7654 transitions. [2021-06-05 20:58:41,729 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) [2021-06-05 20:58:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7654 transitions. [2021-06-05 20:58:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:41,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:41,732 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:41,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 20:58:41,732 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:41,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1242392197, now seen corresponding path program 77 times [2021-06-05 20:58:41,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:41,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456626924] [2021-06-05 20:58:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:41,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:41,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456626924] [2021-06-05 20:58:41,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456626924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:41,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:41,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:41,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772749920] [2021-06-05 20:58:41,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:41,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:41,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:41,809 INFO L87 Difference]: Start difference. First operand 1881 states and 7654 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:41,881 INFO L93 Difference]: Finished difference Result 4026 states and 15433 transitions. [2021-06-05 20:58:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:41,889 INFO L225 Difference]: With dead ends: 4026 [2021-06-05 20:58:41,889 INFO L226 Difference]: Without dead ends: 3741 [2021-06-05 20:58:41,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:41,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-06-05 20:58:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 1927. [2021-06-05 20:58:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 4.053478712357217) internal successors, (7807), 1926 states have internal predecessors, (7807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7807 transitions. [2021-06-05 20:58:41,939 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7807 transitions. Word has length 25 [2021-06-05 20:58:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:41,940 INFO L482 AbstractCegarLoop]: Abstraction has 1927 states and 7807 transitions. [2021-06-05 20:58:41,940 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) [2021-06-05 20:58:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7807 transitions. [2021-06-05 20:58:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:41,942 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:41,942 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:41,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 20:58:41,943 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1009238105, now seen corresponding path program 78 times [2021-06-05 20:58:41,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:41,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755193982] [2021-06-05 20:58:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:42,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:42,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755193982] [2021-06-05 20:58:42,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755193982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:42,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:42,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:42,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144652820] [2021-06-05 20:58:42,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:42,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:42,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:42,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:42,016 INFO L87 Difference]: Start difference. First operand 1927 states and 7807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:42,089 INFO L93 Difference]: Finished difference Result 4024 states and 15382 transitions. [2021-06-05 20:58:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:42,090 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 [2021-06-05 20:58:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:42,097 INFO L225 Difference]: With dead ends: 4024 [2021-06-05 20:58:42,098 INFO L226 Difference]: Without dead ends: 3681 [2021-06-05 20:58:42,098 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-06-05 20:58:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1867. [2021-06-05 20:58:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.079849946409432) internal successors, (7613), 1866 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7613 transitions. [2021-06-05 20:58:42,147 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7613 transitions. Word has length 25 [2021-06-05 20:58:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:42,147 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7613 transitions. [2021-06-05 20:58:42,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7613 transitions. [2021-06-05 20:58:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:42,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:42,150 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:42,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 20:58:42,150 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:42,150 INFO L82 PathProgramCache]: Analyzing trace with hash 73448473, now seen corresponding path program 79 times [2021-06-05 20:58:42,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:42,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796820934] [2021-06-05 20:58:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:42,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:42,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796820934] [2021-06-05 20:58:42,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796820934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:42,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:42,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:42,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722913555] [2021-06-05 20:58:42,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:42,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:42,228 INFO L87 Difference]: Start difference. First operand 1867 states and 7613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:42,290 INFO L93 Difference]: Finished difference Result 3862 states and 14761 transitions. [2021-06-05 20:58:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:42,298 INFO L225 Difference]: With dead ends: 3862 [2021-06-05 20:58:42,298 INFO L226 Difference]: Without dead ends: 3615 [2021-06-05 20:58:42,298 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-06-05 20:58:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 1903. [2021-06-05 20:58:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.0678233438485805) internal successors, (7737), 1902 states have internal predecessors, (7737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7737 transitions. [2021-06-05 20:58:42,347 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7737 transitions. Word has length 25 [2021-06-05 20:58:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:42,347 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7737 transitions. [2021-06-05 20:58:42,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7737 transitions. [2021-06-05 20:58:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:42,350 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:42,350 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:42,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 20:58:42,350 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:42,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1516486277, now seen corresponding path program 80 times [2021-06-05 20:58:42,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:42,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371768529] [2021-06-05 20:58:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:42,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:42,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371768529] [2021-06-05 20:58:42,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371768529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:42,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:42,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:42,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138520002] [2021-06-05 20:58:42,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:42,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:42,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:42,422 INFO L87 Difference]: Start difference. First operand 1903 states and 7737 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:42,481 INFO L93 Difference]: Finished difference Result 3900 states and 14886 transitions. [2021-06-05 20:58:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:42,481 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 [2021-06-05 20:58:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:42,488 INFO L225 Difference]: With dead ends: 3900 [2021-06-05 20:58:42,488 INFO L226 Difference]: Without dead ends: 3587 [2021-06-05 20:58:42,488 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-06-05 20:58:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 1875. [2021-06-05 20:58:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.077374599786553) internal successors, (7641), 1874 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7641 transitions. [2021-06-05 20:58:42,536 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7641 transitions. Word has length 25 [2021-06-05 20:58:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:42,536 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7641 transitions. [2021-06-05 20:58:42,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7641 transitions. [2021-06-05 20:58:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:42,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:42,539 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:42,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 20:58:42,539 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1614797799, now seen corresponding path program 81 times [2021-06-05 20:58:42,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:42,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394398971] [2021-06-05 20:58:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:42,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:42,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394398971] [2021-06-05 20:58:42,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394398971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:42,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:42,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:42,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780707464] [2021-06-05 20:58:42,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:42,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:42,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:42,625 INFO L87 Difference]: Start difference. First operand 1875 states and 7641 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:42,672 INFO L93 Difference]: Finished difference Result 3812 states and 14548 transitions. [2021-06-05 20:58:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:42,680 INFO L225 Difference]: With dead ends: 3812 [2021-06-05 20:58:42,680 INFO L226 Difference]: Without dead ends: 3565 [2021-06-05 20:58:42,680 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-06-05 20:58:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 1891. [2021-06-05 20:58:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.068253968253968) internal successors, (7689), 1890 states have internal predecessors, (7689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7689 transitions. [2021-06-05 20:58:42,748 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7689 transitions. Word has length 25 [2021-06-05 20:58:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:42,749 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7689 transitions. [2021-06-05 20:58:42,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7689 transitions. [2021-06-05 20:58:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:42,752 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:42,752 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:42,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 20:58:42,752 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash 65698841, now seen corresponding path program 82 times [2021-06-05 20:58:42,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:42,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051637647] [2021-06-05 20:58:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:42,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:42,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051637647] [2021-06-05 20:58:42,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051637647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:42,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:42,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:42,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380408632] [2021-06-05 20:58:42,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:42,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:42,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:42,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:42,828 INFO L87 Difference]: Start difference. First operand 1891 states and 7689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:42,899 INFO L93 Difference]: Finished difference Result 3812 states and 14532 transitions. [2021-06-05 20:58:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:42,907 INFO L225 Difference]: With dead ends: 3812 [2021-06-05 20:58:42,908 INFO L226 Difference]: Without dead ends: 3549 [2021-06-05 20:58:42,908 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-06-05 20:58:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 1875. [2021-06-05 20:58:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.073105656350053) internal successors, (7633), 1874 states have internal predecessors, (7633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7633 transitions. [2021-06-05 20:58:42,966 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7633 transitions. Word has length 25 [2021-06-05 20:58:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:42,966 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7633 transitions. [2021-06-05 20:58:42,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7633 transitions. [2021-06-05 20:58:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:42,969 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:42,969 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:42,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 20:58:42,970 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash -197635845, now seen corresponding path program 83 times [2021-06-05 20:58:42,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:42,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093879829] [2021-06-05 20:58:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:43,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:43,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093879829] [2021-06-05 20:58:43,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093879829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:43,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:43,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:43,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833142733] [2021-06-05 20:58:43,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:43,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:43,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:43,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:43,040 INFO L87 Difference]: Start difference. First operand 1875 states and 7633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:43,104 INFO L93 Difference]: Finished difference Result 3900 states and 14898 transitions. [2021-06-05 20:58:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:43,112 INFO L225 Difference]: With dead ends: 3900 [2021-06-05 20:58:43,113 INFO L226 Difference]: Without dead ends: 3615 [2021-06-05 20:58:43,113 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-06-05 20:58:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 1903. [2021-06-05 20:58:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.059411146161935) internal successors, (7721), 1902 states have internal predecessors, (7721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7721 transitions. [2021-06-05 20:58:43,171 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7721 transitions. Word has length 25 [2021-06-05 20:58:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:43,171 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7721 transitions. [2021-06-05 20:58:43,172 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) [2021-06-05 20:58:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7721 transitions. [2021-06-05 20:58:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:43,174 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:43,174 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:43,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 20:58:43,175 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1589780391, now seen corresponding path program 84 times [2021-06-05 20:58:43,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:43,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929708243] [2021-06-05 20:58:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:43,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:43,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929708243] [2021-06-05 20:58:43,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929708243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:43,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:43,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:43,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617314219] [2021-06-05 20:58:43,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:43,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:43,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:43,255 INFO L87 Difference]: Start difference. First operand 1903 states and 7721 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:43,321 INFO L93 Difference]: Finished difference Result 3862 states and 14717 transitions. [2021-06-05 20:58:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:43,322 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 [2021-06-05 20:58:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:43,329 INFO L225 Difference]: With dead ends: 3862 [2021-06-05 20:58:43,329 INFO L226 Difference]: Without dead ends: 3579 [2021-06-05 20:58:43,330 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-06-05 20:58:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 1867. [2021-06-05 20:58:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.077706323687031) internal successors, (7609), 1866 states have internal predecessors, (7609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7609 transitions. [2021-06-05 20:58:43,379 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7609 transitions. Word has length 25 [2021-06-05 20:58:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:43,379 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7609 transitions. [2021-06-05 20:58:43,379 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) [2021-06-05 20:58:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7609 transitions. [2021-06-05 20:58:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:43,382 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:43,382 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:43,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 20:58:43,382 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:43,382 INFO L82 PathProgramCache]: Analyzing trace with hash 461453435, now seen corresponding path program 85 times [2021-06-05 20:58:43,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:43,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91409568] [2021-06-05 20:58:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:43,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:43,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91409568] [2021-06-05 20:58:43,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91409568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:43,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:43,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:43,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253277337] [2021-06-05 20:58:43,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:43,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:43,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:43,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:43,469 INFO L87 Difference]: Start difference. First operand 1867 states and 7609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:43,522 INFO L93 Difference]: Finished difference Result 3858 states and 14747 transitions. [2021-06-05 20:58:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:43,530 INFO L225 Difference]: With dead ends: 3858 [2021-06-05 20:58:43,530 INFO L226 Difference]: Without dead ends: 3611 [2021-06-05 20:58:43,530 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-06-05 20:58:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 1903. [2021-06-05 20:58:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.065720294426919) internal successors, (7733), 1902 states have internal predecessors, (7733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7733 transitions. [2021-06-05 20:58:43,582 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7733 transitions. Word has length 25 [2021-06-05 20:58:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:43,582 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7733 transitions. [2021-06-05 20:58:43,582 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) [2021-06-05 20:58:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7733 transitions. [2021-06-05 20:58:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:43,585 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:43,585 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:43,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 20:58:43,585 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:43,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1469751419, now seen corresponding path program 86 times [2021-06-05 20:58:43,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:43,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717910093] [2021-06-05 20:58:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:43,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:43,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717910093] [2021-06-05 20:58:43,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717910093] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:43,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:43,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:43,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099792464] [2021-06-05 20:58:43,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:43,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:43,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:43,668 INFO L87 Difference]: Start difference. First operand 1903 states and 7733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:43,730 INFO L93 Difference]: Finished difference Result 3894 states and 14867 transitions. [2021-06-05 20:58:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:43,737 INFO L225 Difference]: With dead ends: 3894 [2021-06-05 20:58:43,737 INFO L226 Difference]: Without dead ends: 3583 [2021-06-05 20:58:43,738 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-06-05 20:58:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 1875. [2021-06-05 20:58:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.0752401280683035) internal successors, (7637), 1874 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7637 transitions. [2021-06-05 20:58:43,785 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7637 transitions. Word has length 25 [2021-06-05 20:58:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:43,785 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7637 transitions. [2021-06-05 20:58:43,786 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) [2021-06-05 20:58:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7637 transitions. [2021-06-05 20:58:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:43,788 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:43,788 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:43,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 20:58:43,788 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash -385343527, now seen corresponding path program 87 times [2021-06-05 20:58:43,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:43,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970064397] [2021-06-05 20:58:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:43,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:43,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970064397] [2021-06-05 20:58:43,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970064397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:43,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:43,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:43,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333242629] [2021-06-05 20:58:43,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:43,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:43,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:43,856 INFO L87 Difference]: Start difference. First operand 1875 states and 7637 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:43,914 INFO L93 Difference]: Finished difference Result 3810 states and 14539 transitions. [2021-06-05 20:58:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:43,914 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 [2021-06-05 20:58:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:43,921 INFO L225 Difference]: With dead ends: 3810 [2021-06-05 20:58:43,921 INFO L226 Difference]: Without dead ends: 3563 [2021-06-05 20:58:43,922 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2021-06-05 20:58:43,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 1891. [2021-06-05 20:58:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.0661375661375665) internal successors, (7685), 1890 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7685 transitions. [2021-06-05 20:58:43,970 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7685 transitions. Word has length 25 [2021-06-05 20:58:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:43,970 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7685 transitions. [2021-06-05 20:58:43,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7685 transitions. [2021-06-05 20:58:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:43,973 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:43,973 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:43,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 20:58:43,973 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:43,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:43,973 INFO L82 PathProgramCache]: Analyzing trace with hash -415203205, now seen corresponding path program 88 times [2021-06-05 20:58:43,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:43,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234195019] [2021-06-05 20:58:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:44,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:44,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234195019] [2021-06-05 20:58:44,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234195019] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:44,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:44,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:44,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012976793] [2021-06-05 20:58:44,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:44,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:44,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:44,038 INFO L87 Difference]: Start difference. First operand 1891 states and 7685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:44,099 INFO L93 Difference]: Finished difference Result 3810 states and 14523 transitions. [2021-06-05 20:58:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:44,106 INFO L225 Difference]: With dead ends: 3810 [2021-06-05 20:58:44,106 INFO L226 Difference]: Without dead ends: 3547 [2021-06-05 20:58:44,107 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:44,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-06-05 20:58:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 1875. [2021-06-05 20:58:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.070971184631803) internal successors, (7629), 1874 states have internal predecessors, (7629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7629 transitions. [2021-06-05 20:58:44,154 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7629 transitions. Word has length 25 [2021-06-05 20:58:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:44,154 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7629 transitions. [2021-06-05 20:58:44,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7629 transitions. [2021-06-05 20:58:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:44,157 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:44,157 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:44,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 20:58:44,157 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1519319163, now seen corresponding path program 89 times [2021-06-05 20:58:44,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:44,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091876454] [2021-06-05 20:58:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:44,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:44,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091876454] [2021-06-05 20:58:44,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091876454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:44,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:44,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:44,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063140225] [2021-06-05 20:58:44,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:44,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:44,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:44,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:44,224 INFO L87 Difference]: Start difference. First operand 1875 states and 7629 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:44,289 INFO L93 Difference]: Finished difference Result 3894 states and 14879 transitions. [2021-06-05 20:58:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:44,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:44,296 INFO L225 Difference]: With dead ends: 3894 [2021-06-05 20:58:44,296 INFO L226 Difference]: Without dead ends: 3611 [2021-06-05 20:58:44,297 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-06-05 20:58:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 1903. [2021-06-05 20:58:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.0573080967402735) internal successors, (7717), 1902 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7717 transitions. [2021-06-05 20:58:44,345 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7717 transitions. Word has length 25 [2021-06-05 20:58:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:44,345 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7717 transitions. [2021-06-05 20:58:44,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7717 transitions. [2021-06-05 20:58:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:44,348 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:44,348 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:44,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 20:58:44,348 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash -524017831, now seen corresponding path program 90 times [2021-06-05 20:58:44,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:44,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194431680] [2021-06-05 20:58:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:44,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:44,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194431680] [2021-06-05 20:58:44,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194431680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:44,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:44,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:44,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746453232] [2021-06-05 20:58:44,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:44,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:44,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:44,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:44,422 INFO L87 Difference]: Start difference. First operand 1903 states and 7717 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:44,487 INFO L93 Difference]: Finished difference Result 3858 states and 14703 transitions. [2021-06-05 20:58:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:44,495 INFO L225 Difference]: With dead ends: 3858 [2021-06-05 20:58:44,495 INFO L226 Difference]: Without dead ends: 3575 [2021-06-05 20:58:44,496 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-06-05 20:58:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 1867. [2021-06-05 20:58:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.07556270096463) internal successors, (7605), 1866 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7605 transitions. [2021-06-05 20:58:44,544 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7605 transitions. Word has length 25 [2021-06-05 20:58:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:44,544 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7605 transitions. [2021-06-05 20:58:44,544 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) [2021-06-05 20:58:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7605 transitions. [2021-06-05 20:58:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:44,547 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:44,547 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:44,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 20:58:44,547 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:44,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1185557725, now seen corresponding path program 91 times [2021-06-05 20:58:44,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:44,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541008520] [2021-06-05 20:58:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:44,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:44,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541008520] [2021-06-05 20:58:44,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541008520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:44,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:44,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:44,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896033086] [2021-06-05 20:58:44,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:44,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:44,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:44,614 INFO L87 Difference]: Start difference. First operand 1867 states and 7605 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:44,700 INFO L93 Difference]: Finished difference Result 4026 states and 15449 transitions. [2021-06-05 20:58:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:44,700 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 [2021-06-05 20:58:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:44,708 INFO L225 Difference]: With dead ends: 4026 [2021-06-05 20:58:44,709 INFO L226 Difference]: Without dead ends: 3741 [2021-06-05 20:58:44,709 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-06-05 20:58:44,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 1927. [2021-06-05 20:58:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 4.061786085150571) internal successors, (7823), 1926 states have internal predecessors, (7823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7823 transitions. [2021-06-05 20:58:44,760 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7823 transitions. Word has length 25 [2021-06-05 20:58:44,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:44,760 INFO L482 AbstractCegarLoop]: Abstraction has 1927 states and 7823 transitions. [2021-06-05 20:58:44,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7823 transitions. [2021-06-05 20:58:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:44,763 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:44,763 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:44,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 20:58:44,763 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:44,763 INFO L82 PathProgramCache]: Analyzing trace with hash -857779269, now seen corresponding path program 92 times [2021-06-05 20:58:44,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:44,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507717802] [2021-06-05 20:58:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:44,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:44,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507717802] [2021-06-05 20:58:44,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507717802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:44,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:44,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:44,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583393414] [2021-06-05 20:58:44,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:44,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:44,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:44,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:44,843 INFO L87 Difference]: Start difference. First operand 1927 states and 7823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:44,910 INFO L93 Difference]: Finished difference Result 4024 states and 15398 transitions. [2021-06-05 20:58:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:44,910 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 [2021-06-05 20:58:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:44,918 INFO L225 Difference]: With dead ends: 4024 [2021-06-05 20:58:44,918 INFO L226 Difference]: Without dead ends: 3695 [2021-06-05 20:58:44,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-06-05 20:58:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 1881. [2021-06-05 20:58:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.072340425531915) internal successors, (7656), 1880 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7656 transitions. [2021-06-05 20:58:44,967 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7656 transitions. Word has length 25 [2021-06-05 20:58:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:44,967 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7656 transitions. [2021-06-05 20:58:44,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7656 transitions. [2021-06-05 20:58:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:44,970 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:44,970 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:44,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 20:58:44,970 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash 338760763, now seen corresponding path program 93 times [2021-06-05 20:58:44,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:44,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934870615] [2021-06-05 20:58:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:45,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:45,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934870615] [2021-06-05 20:58:45,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934870615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:45,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:45,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:45,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113502284] [2021-06-05 20:58:45,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:45,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:45,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:45,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:45,041 INFO L87 Difference]: Start difference. First operand 1881 states and 7656 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:45,111 INFO L93 Difference]: Finished difference Result 3972 states and 15204 transitions. [2021-06-05 20:58:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:45,119 INFO L225 Difference]: With dead ends: 3972 [2021-06-05 20:58:45,119 INFO L226 Difference]: Without dead ends: 3687 [2021-06-05 20:58:45,119 INFO L810 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 [2021-06-05 20:58:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2021-06-05 20:58:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 1909. [2021-06-05 20:58:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.058700209643606) internal successors, (7744), 1908 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7744 transitions. [2021-06-05 20:58:45,169 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7744 transitions. Word has length 25 [2021-06-05 20:58:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:45,169 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7744 transitions. [2021-06-05 20:58:45,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7744 transitions. [2021-06-05 20:58:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:45,172 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:45,172 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:45,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 20:58:45,172 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:45,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1531227195, now seen corresponding path program 94 times [2021-06-05 20:58:45,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:45,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170672572] [2021-06-05 20:58:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:45,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:45,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170672572] [2021-06-05 20:58:45,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170672572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:45,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:45,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:45,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419191637] [2021-06-05 20:58:45,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:45,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:45,253 INFO L87 Difference]: Start difference. First operand 1909 states and 7744 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:45,313 INFO L93 Difference]: Finished difference Result 3934 states and 15023 transitions. [2021-06-05 20:58:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:45,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:45,320 INFO L225 Difference]: With dead ends: 3934 [2021-06-05 20:58:45,321 INFO L226 Difference]: Without dead ends: 3659 [2021-06-05 20:58:45,321 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-06-05 20:58:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 1881. [2021-06-05 20:58:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.064893617021276) internal successors, (7642), 1880 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7642 transitions. [2021-06-05 20:58:45,369 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7642 transitions. Word has length 25 [2021-06-05 20:58:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:45,369 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7642 transitions. [2021-06-05 20:58:45,369 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) [2021-06-05 20:58:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7642 transitions. [2021-06-05 20:58:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:45,372 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:45,372 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:45,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 20:58:45,372 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:45,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1321108377, now seen corresponding path program 95 times [2021-06-05 20:58:45,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:45,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395451553] [2021-06-05 20:58:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:45,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:45,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395451553] [2021-06-05 20:58:45,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395451553] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:45,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:45,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:45,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113068788] [2021-06-05 20:58:45,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:45,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:45,441 INFO L87 Difference]: Start difference. First operand 1881 states and 7642 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:45,501 INFO L93 Difference]: Finished difference Result 3968 states and 15180 transitions. [2021-06-05 20:58:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:45,501 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 [2021-06-05 20:58:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:45,509 INFO L225 Difference]: With dead ends: 3968 [2021-06-05 20:58:45,509 INFO L226 Difference]: Without dead ends: 3685 [2021-06-05 20:58:45,509 INFO L810 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 [2021-06-05 20:58:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2021-06-05 20:58:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 1909. [2021-06-05 20:58:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.051362683438155) internal successors, (7730), 1908 states have internal predecessors, (7730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7730 transitions. [2021-06-05 20:58:45,559 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7730 transitions. Word has length 25 [2021-06-05 20:58:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:45,559 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7730 transitions. [2021-06-05 20:58:45,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7730 transitions. [2021-06-05 20:58:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:45,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:45,562 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:45,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 20:58:45,562 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:45,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:45,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1892796293, now seen corresponding path program 96 times [2021-06-05 20:58:45,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:45,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708744150] [2021-06-05 20:58:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:45,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:45,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708744150] [2021-06-05 20:58:45,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708744150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:45,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:45,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:45,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868768223] [2021-06-05 20:58:45,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:45,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:45,629 INFO L87 Difference]: Start difference. First operand 1909 states and 7730 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:45,704 INFO L93 Difference]: Finished difference Result 3932 states and 15004 transitions. [2021-06-05 20:58:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:45,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:45,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:45,711 INFO L225 Difference]: With dead ends: 3932 [2021-06-05 20:58:45,711 INFO L226 Difference]: Without dead ends: 3639 [2021-06-05 20:58:45,711 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-06-05 20:58:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 1863. [2021-06-05 20:58:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.078947368421052) internal successors, (7595), 1862 states have internal predecessors, (7595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7595 transitions. [2021-06-05 20:58:45,760 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7595 transitions. Word has length 25 [2021-06-05 20:58:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:45,760 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7595 transitions. [2021-06-05 20:58:45,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7595 transitions. [2021-06-05 20:58:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:45,762 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:45,762 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:45,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 20:58:45,762 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash -782839361, now seen corresponding path program 97 times [2021-06-05 20:58:45,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:45,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127281330] [2021-06-05 20:58:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:45,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:45,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127281330] [2021-06-05 20:58:45,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127281330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:45,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:45,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:45,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855118913] [2021-06-05 20:58:45,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:45,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:45,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:45,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:45,838 INFO L87 Difference]: Start difference. First operand 1863 states and 7595 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:45,903 INFO L93 Difference]: Finished difference Result 4298 states and 16547 transitions. [2021-06-05 20:58:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:45,912 INFO L225 Difference]: With dead ends: 4298 [2021-06-05 20:58:45,912 INFO L226 Difference]: Without dead ends: 4013 [2021-06-05 20:58:45,912 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2021-06-05 20:58:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 1946. [2021-06-05 20:58:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 4.06426735218509) internal successors, (7905), 1945 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 7905 transitions. [2021-06-05 20:58:45,966 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 7905 transitions. Word has length 25 [2021-06-05 20:58:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:45,966 INFO L482 AbstractCegarLoop]: Abstraction has 1946 states and 7905 transitions. [2021-06-05 20:58:45,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 7905 transitions. [2021-06-05 20:58:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:45,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:45,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:45,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 20:58:45,969 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1468790941, now seen corresponding path program 98 times [2021-06-05 20:58:45,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:45,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216714034] [2021-06-05 20:58:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:46,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:46,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216714034] [2021-06-05 20:58:46,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216714034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:46,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:46,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:46,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363388060] [2021-06-05 20:58:46,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:46,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:46,110 INFO L87 Difference]: Start difference. First operand 1946 states and 7905 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:46,165 INFO L93 Difference]: Finished difference Result 4296 states and 16496 transitions. [2021-06-05 20:58:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:46,173 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 20:58:46,174 INFO L226 Difference]: Without dead ends: 3967 [2021-06-05 20:58:46,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2021-06-05 20:58:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 1900. [2021-06-05 20:58:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.074776197998947) internal successors, (7738), 1899 states have internal predecessors, (7738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7738 transitions. [2021-06-05 20:58:46,224 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7738 transitions. Word has length 25 [2021-06-05 20:58:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:46,224 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7738 transitions. [2021-06-05 20:58:46,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7738 transitions. [2021-06-05 20:58:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:46,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:46,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:46,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 20:58:46,227 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:46,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1629636323, now seen corresponding path program 99 times [2021-06-05 20:58:46,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:46,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334506626] [2021-06-05 20:58:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:46,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:46,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334506626] [2021-06-05 20:58:46,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334506626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:46,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:46,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:46,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697265060] [2021-06-05 20:58:46,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:46,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:46,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:46,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:46,291 INFO L87 Difference]: Start difference. First operand 1900 states and 7738 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:46,348 INFO L93 Difference]: Finished difference Result 4244 states and 16302 transitions. [2021-06-05 20:58:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:46,356 INFO L225 Difference]: With dead ends: 4244 [2021-06-05 20:58:46,357 INFO L226 Difference]: Without dead ends: 3959 [2021-06-05 20:58:46,357 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2021-06-05 20:58:46,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 1928. [2021-06-05 20:58:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 4.06123508043591) internal successors, (7826), 1927 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7826 transitions. [2021-06-05 20:58:46,407 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7826 transitions. Word has length 25 [2021-06-05 20:58:46,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:46,407 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 7826 transitions. [2021-06-05 20:58:46,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7826 transitions. [2021-06-05 20:58:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:46,410 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:46,410 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:46,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 20:58:46,410 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:46,410 INFO L82 PathProgramCache]: Analyzing trace with hash -437169891, now seen corresponding path program 100 times [2021-06-05 20:58:46,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:46,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202167308] [2021-06-05 20:58:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:46,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:46,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202167308] [2021-06-05 20:58:46,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202167308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:46,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:46,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:46,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994432333] [2021-06-05 20:58:46,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:46,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:46,475 INFO L87 Difference]: Start difference. First operand 1928 states and 7826 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:46,531 INFO L93 Difference]: Finished difference Result 4206 states and 16121 transitions. [2021-06-05 20:58:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:46,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:46,540 INFO L225 Difference]: With dead ends: 4206 [2021-06-05 20:58:46,540 INFO L226 Difference]: Without dead ends: 3931 [2021-06-05 20:58:46,540 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-06-05 20:58:46,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 1900. [2021-06-05 20:58:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.067403896787783) internal successors, (7724), 1899 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7724 transitions. [2021-06-05 20:58:46,590 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7724 transitions. Word has length 25 [2021-06-05 20:58:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:46,591 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7724 transitions. [2021-06-05 20:58:46,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7724 transitions. [2021-06-05 20:58:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:46,593 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:46,593 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:46,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 20:58:46,593 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash -647288709, now seen corresponding path program 101 times [2021-06-05 20:58:46,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:46,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058471124] [2021-06-05 20:58:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:46,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:46,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058471124] [2021-06-05 20:58:46,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058471124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:46,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:46,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:46,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955348192] [2021-06-05 20:58:46,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:46,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:46,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:46,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:46,680 INFO L87 Difference]: Start difference. First operand 1900 states and 7724 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:46,734 INFO L93 Difference]: Finished difference Result 4240 states and 16278 transitions. [2021-06-05 20:58:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:46,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:46,742 INFO L225 Difference]: With dead ends: 4240 [2021-06-05 20:58:46,742 INFO L226 Difference]: Without dead ends: 3957 [2021-06-05 20:58:46,742 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-06-05 20:58:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 1928. [2021-06-05 20:58:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 4.053969901401142) internal successors, (7812), 1927 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7812 transitions. [2021-06-05 20:58:46,793 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7812 transitions. Word has length 25 [2021-06-05 20:58:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:46,793 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 7812 transitions. [2021-06-05 20:58:46,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7812 transitions. [2021-06-05 20:58:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:46,796 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:46,796 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:46,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 20:58:46,796 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:46,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash 433773917, now seen corresponding path program 102 times [2021-06-05 20:58:46,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:46,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991655337] [2021-06-05 20:58:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:46,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:46,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991655337] [2021-06-05 20:58:46,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991655337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:46,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:46,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:46,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271151329] [2021-06-05 20:58:46,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:46,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:46,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:46,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:46,868 INFO L87 Difference]: Start difference. First operand 1928 states and 7812 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:46,925 INFO L93 Difference]: Finished difference Result 4204 states and 16102 transitions. [2021-06-05 20:58:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:46,926 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 [2021-06-05 20:58:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:46,934 INFO L225 Difference]: With dead ends: 4204 [2021-06-05 20:58:46,934 INFO L226 Difference]: Without dead ends: 3915 [2021-06-05 20:58:46,934 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3915 states. [2021-06-05 20:58:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3915 to 1886. [2021-06-05 20:58:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 4.074270557029178) internal successors, (7680), 1885 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 7680 transitions. [2021-06-05 20:58:46,984 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 7680 transitions. Word has length 25 [2021-06-05 20:58:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:46,984 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 7680 transitions. [2021-06-05 20:58:46,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 7680 transitions. [2021-06-05 20:58:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:46,987 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:46,987 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:46,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 20:58:46,987 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1538821917, now seen corresponding path program 103 times [2021-06-05 20:58:46,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:46,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625249780] [2021-06-05 20:58:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:47,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:47,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625249780] [2021-06-05 20:58:47,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625249780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:47,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:47,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:47,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233159685] [2021-06-05 20:58:47,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:47,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:47,054 INFO L87 Difference]: Start difference. First operand 1886 states and 7680 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:47,114 INFO L93 Difference]: Finished difference Result 4487 states and 17282 transitions. [2021-06-05 20:58:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:47,122 INFO L225 Difference]: With dead ends: 4487 [2021-06-05 20:58:47,123 INFO L226 Difference]: Without dead ends: 4202 [2021-06-05 20:58:47,123 INFO L810 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 [2021-06-05 20:58:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-06-05 20:58:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 1979. [2021-06-05 20:58:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1978 states have (on average 4.0586450960566225) internal successors, (8028), 1978 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 8028 transitions. [2021-06-05 20:58:47,176 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 8028 transitions. Word has length 25 [2021-06-05 20:58:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:47,176 INFO L482 AbstractCegarLoop]: Abstraction has 1979 states and 8028 transitions. [2021-06-05 20:58:47,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 8028 transitions. [2021-06-05 20:58:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:47,179 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:47,179 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:47,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 20:58:47,179 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:47,179 INFO L82 PathProgramCache]: Analyzing trace with hash -504515077, now seen corresponding path program 104 times [2021-06-05 20:58:47,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:47,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287879827] [2021-06-05 20:58:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:47,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:47,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287879827] [2021-06-05 20:58:47,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287879827] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:47,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:47,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:47,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080248542] [2021-06-05 20:58:47,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:47,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:47,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:47,253 INFO L87 Difference]: Start difference. First operand 1979 states and 8028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:47,322 INFO L93 Difference]: Finished difference Result 4485 states and 17231 transitions. [2021-06-05 20:58:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:47,322 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 [2021-06-05 20:58:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:47,331 INFO L225 Difference]: With dead ends: 4485 [2021-06-05 20:58:47,331 INFO L226 Difference]: Without dead ends: 4156 [2021-06-05 20:58:47,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2021-06-05 20:58:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 1933. [2021-06-05 20:58:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.064182194616977) internal successors, (7852), 1932 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7852 transitions. [2021-06-05 20:58:47,383 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7852 transitions. Word has length 25 [2021-06-05 20:58:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:47,384 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7852 transitions. [2021-06-05 20:58:47,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7852 transitions. [2021-06-05 20:58:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:47,386 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:47,386 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:47,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 20:58:47,386 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1964562205, now seen corresponding path program 105 times [2021-06-05 20:58:47,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:47,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750253078] [2021-06-05 20:58:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:47,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:47,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750253078] [2021-06-05 20:58:47,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750253078] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:47,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:47,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:47,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655897371] [2021-06-05 20:58:47,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:47,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:47,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:47,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:47,470 INFO L87 Difference]: Start difference. First operand 1933 states and 7852 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:47,536 INFO L93 Difference]: Finished difference Result 4555 states and 17493 transitions. [2021-06-05 20:58:47,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:47,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:47,545 INFO L225 Difference]: With dead ends: 4555 [2021-06-05 20:58:47,545 INFO L226 Difference]: Without dead ends: 4270 [2021-06-05 20:58:47,545 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:47,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-05 20:58:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 2012. [2021-06-05 20:58:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2011 states have (on average 4.037294878170065) internal successors, (8119), 2011 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 8119 transitions. [2021-06-05 20:58:47,599 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 8119 transitions. Word has length 25 [2021-06-05 20:58:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:47,599 INFO L482 AbstractCegarLoop]: Abstraction has 2012 states and 8119 transitions. [2021-06-05 20:58:47,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 8119 transitions. [2021-06-05 20:58:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:47,601 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:47,601 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:47,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 20:58:47,602 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1408773917, now seen corresponding path program 106 times [2021-06-05 20:58:47,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:47,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077124291] [2021-06-05 20:58:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:47,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:47,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077124291] [2021-06-05 20:58:47,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077124291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:47,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:47,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:47,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799120376] [2021-06-05 20:58:47,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:47,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:47,670 INFO L87 Difference]: Start difference. First operand 2012 states and 8119 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:47,723 INFO L93 Difference]: Finished difference Result 4588 states and 17560 transitions. [2021-06-05 20:58:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:47,732 INFO L225 Difference]: With dead ends: 4588 [2021-06-05 20:58:47,732 INFO L226 Difference]: Without dead ends: 4191 [2021-06-05 20:58:47,732 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-06-05 20:58:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 1933. [2021-06-05 20:58:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.0439958592132506) internal successors, (7813), 1932 states have internal predecessors, (7813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7813 transitions. [2021-06-05 20:58:47,785 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7813 transitions. Word has length 25 [2021-06-05 20:58:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:47,785 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7813 transitions. [2021-06-05 20:58:47,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7813 transitions. [2021-06-05 20:58:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:47,787 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:47,787 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:47,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 20:58:47,787 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:47,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:47,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1348057477, now seen corresponding path program 107 times [2021-06-05 20:58:47,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:47,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614631810] [2021-06-05 20:58:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:47,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:47,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614631810] [2021-06-05 20:58:47,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614631810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:47,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:47,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:47,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361429450] [2021-06-05 20:58:47,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:47,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:47,856 INFO L87 Difference]: Start difference. First operand 1933 states and 7813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:47,919 INFO L93 Difference]: Finished difference Result 4534 states and 17393 transitions. [2021-06-05 20:58:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:47,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:47,928 INFO L225 Difference]: With dead ends: 4534 [2021-06-05 20:58:47,928 INFO L226 Difference]: Without dead ends: 4251 [2021-06-05 20:58:47,928 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-06-05 20:58:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 1995. [2021-06-05 20:58:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 4.027081243731193) internal successors, (8030), 1994 states have internal predecessors, (8030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 8030 transitions. [2021-06-05 20:58:47,982 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 8030 transitions. Word has length 25 [2021-06-05 20:58:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:47,982 INFO L482 AbstractCegarLoop]: Abstraction has 1995 states and 8030 transitions. [2021-06-05 20:58:47,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 8030 transitions. [2021-06-05 20:58:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:47,984 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:47,984 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:47,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 20:58:47,985 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:47,985 INFO L82 PathProgramCache]: Analyzing trace with hash 589520221, now seen corresponding path program 108 times [2021-06-05 20:58:47,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:47,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900335478] [2021-06-05 20:58:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:48,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:48,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900335478] [2021-06-05 20:58:48,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900335478] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:48,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:48,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:48,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339546509] [2021-06-05 20:58:48,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:48,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:48,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:48,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:48,055 INFO L87 Difference]: Start difference. First operand 1995 states and 8030 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:48,122 INFO L93 Difference]: Finished difference Result 4569 states and 17466 transitions. [2021-06-05 20:58:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:48,122 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 [2021-06-05 20:58:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:48,131 INFO L225 Difference]: With dead ends: 4569 [2021-06-05 20:58:48,131 INFO L226 Difference]: Without dead ends: 4142 [2021-06-05 20:58:48,131 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-06-05 20:58:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 1886. [2021-06-05 20:58:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 4.064190981432361) internal successors, (7661), 1885 states have internal predecessors, (7661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 7661 transitions. [2021-06-05 20:58:48,183 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 7661 transitions. Word has length 25 [2021-06-05 20:58:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:48,183 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 7661 transitions. [2021-06-05 20:58:48,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 7661 transitions. [2021-06-05 20:58:48,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:48,185 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:48,186 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:48,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 20:58:48,186 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash 682073851, now seen corresponding path program 109 times [2021-06-05 20:58:48,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:48,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551043757] [2021-06-05 20:58:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:48,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:48,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551043757] [2021-06-05 20:58:48,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551043757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:48,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:48,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:48,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204772743] [2021-06-05 20:58:48,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:48,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:48,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:48,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:48,266 INFO L87 Difference]: Start difference. First operand 1886 states and 7661 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:48,330 INFO L93 Difference]: Finished difference Result 4344 states and 16652 transitions. [2021-06-05 20:58:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:48,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:48,339 INFO L225 Difference]: With dead ends: 4344 [2021-06-05 20:58:48,339 INFO L226 Difference]: Without dead ends: 4059 [2021-06-05 20:58:48,339 INFO L810 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 [2021-06-05 20:58:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-06-05 20:58:48,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 1944. [2021-06-05 20:58:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 4.054554812146166) internal successors, (7878), 1943 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 7878 transitions. [2021-06-05 20:58:48,391 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 7878 transitions. Word has length 25 [2021-06-05 20:58:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:48,391 INFO L482 AbstractCegarLoop]: Abstraction has 1944 states and 7878 transitions. [2021-06-05 20:58:48,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 7878 transitions. [2021-06-05 20:58:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:48,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:48,394 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:48,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 20:58:48,394 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:48,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1874540283, now seen corresponding path program 110 times [2021-06-05 20:58:48,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:48,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494667771] [2021-06-05 20:58:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:48,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:48,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494667771] [2021-06-05 20:58:48,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494667771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:48,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:48,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:48,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002639491] [2021-06-05 20:58:48,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:48,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:48,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:48,468 INFO L87 Difference]: Start difference. First operand 1944 states and 7878 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:48,526 INFO L93 Difference]: Finished difference Result 4306 states and 16471 transitions. [2021-06-05 20:58:48,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:48,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:48,535 INFO L225 Difference]: With dead ends: 4306 [2021-06-05 20:58:48,535 INFO L226 Difference]: Without dead ends: 4031 [2021-06-05 20:58:48,535 INFO L810 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 [2021-06-05 20:58:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-06-05 20:58:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 1916. [2021-06-05 20:58:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 4.060574412532637) internal successors, (7776), 1915 states have internal predecessors, (7776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7776 transitions. [2021-06-05 20:58:48,597 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 7776 transitions. Word has length 25 [2021-06-05 20:58:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:48,597 INFO L482 AbstractCegarLoop]: Abstraction has 1916 states and 7776 transitions. [2021-06-05 20:58:48,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 7776 transitions. [2021-06-05 20:58:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:48,600 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:48,600 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:48,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 20:58:48,600 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:48,601 INFO L82 PathProgramCache]: Analyzing trace with hash -628507171, now seen corresponding path program 111 times [2021-06-05 20:58:48,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:48,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622225874] [2021-06-05 20:58:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:48,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:48,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622225874] [2021-06-05 20:58:48,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622225874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:48,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:48,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:48,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364433062] [2021-06-05 20:58:48,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:48,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:48,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:48,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:48,666 INFO L87 Difference]: Start difference. First operand 1916 states and 7776 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:48,733 INFO L93 Difference]: Finished difference Result 4466 states and 17103 transitions. [2021-06-05 20:58:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:48,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:48,742 INFO L225 Difference]: With dead ends: 4466 [2021-06-05 20:58:48,742 INFO L226 Difference]: Without dead ends: 4181 [2021-06-05 20:58:48,742 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2021-06-05 20:58:48,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 1995. [2021-06-05 20:58:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 4.033600802407221) internal successors, (8043), 1994 states have internal predecessors, (8043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 8043 transitions. [2021-06-05 20:58:48,795 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 8043 transitions. Word has length 25 [2021-06-05 20:58:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:48,795 INFO L482 AbstractCegarLoop]: Abstraction has 1995 states and 8043 transitions. [2021-06-05 20:58:48,795 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) [2021-06-05 20:58:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 8043 transitions. [2021-06-05 20:58:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:48,798 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:48,798 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:48,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 20:58:48,798 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash -614287621, now seen corresponding path program 112 times [2021-06-05 20:58:48,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:48,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327853663] [2021-06-05 20:58:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:48,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:48,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327853663] [2021-06-05 20:58:48,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327853663] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:48,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:48,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:48,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704337625] [2021-06-05 20:58:48,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:48,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:48,872 INFO L87 Difference]: Start difference. First operand 1995 states and 8043 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:48,922 INFO L93 Difference]: Finished difference Result 4499 states and 17170 transitions. [2021-06-05 20:58:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:48,931 INFO L225 Difference]: With dead ends: 4499 [2021-06-05 20:58:48,931 INFO L226 Difference]: Without dead ends: 4102 [2021-06-05 20:58:48,931 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-05 20:58:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 1916. [2021-06-05 20:58:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 4.04490861618799) internal successors, (7746), 1915 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7746 transitions. [2021-06-05 20:58:48,983 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 7746 transitions. Word has length 25 [2021-06-05 20:58:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:48,983 INFO L482 AbstractCegarLoop]: Abstraction has 1916 states and 7746 transitions. [2021-06-05 20:58:48,983 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) [2021-06-05 20:58:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 7746 transitions. [2021-06-05 20:58:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:48,985 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:48,985 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:48,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 20:58:48,986 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:48,986 INFO L82 PathProgramCache]: Analyzing trace with hash 337940219, now seen corresponding path program 113 times [2021-06-05 20:58:48,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:48,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48412193] [2021-06-05 20:58:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:49,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:49,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48412193] [2021-06-05 20:58:49,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48412193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:49,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:49,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:49,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413558457] [2021-06-05 20:58:49,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:49,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:49,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:49,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:49,065 INFO L87 Difference]: Start difference. First operand 1916 states and 7746 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:49,126 INFO L93 Difference]: Finished difference Result 4355 states and 16633 transitions. [2021-06-05 20:58:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:49,126 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 [2021-06-05 20:58:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:49,135 INFO L225 Difference]: With dead ends: 4355 [2021-06-05 20:58:49,135 INFO L226 Difference]: Without dead ends: 4108 [2021-06-05 20:58:49,135 INFO L810 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 [2021-06-05 20:58:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-05 20:58:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 1960. [2021-06-05 20:58:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 4.031648800408371) internal successors, (7898), 1959 states have internal predecessors, (7898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 7898 transitions. [2021-06-05 20:58:49,187 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 7898 transitions. Word has length 25 [2021-06-05 20:58:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:49,187 INFO L482 AbstractCegarLoop]: Abstraction has 1960 states and 7898 transitions. [2021-06-05 20:58:49,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 7898 transitions. [2021-06-05 20:58:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:49,189 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:49,189 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:49,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 20:58:49,190 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash -731578787, now seen corresponding path program 114 times [2021-06-05 20:58:49,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:49,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23181843] [2021-06-05 20:58:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:49,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:49,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23181843] [2021-06-05 20:58:49,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23181843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:49,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:49,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:49,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227395088] [2021-06-05 20:58:49,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:49,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:49,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:49,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:49,264 INFO L87 Difference]: Start difference. First operand 1960 states and 7898 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:49,316 INFO L93 Difference]: Finished difference Result 4426 states and 16872 transitions. [2021-06-05 20:58:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:49,325 INFO L225 Difference]: With dead ends: 4426 [2021-06-05 20:58:49,325 INFO L226 Difference]: Without dead ends: 4034 [2021-06-05 20:58:49,325 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-06-05 20:58:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 1886. [2021-06-05 20:58:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 4.0562334217506635) internal successors, (7646), 1885 states have internal predecessors, (7646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 7646 transitions. [2021-06-05 20:58:49,376 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 7646 transitions. Word has length 25 [2021-06-05 20:58:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:49,376 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 7646 transitions. [2021-06-05 20:58:49,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 7646 transitions. [2021-06-05 20:58:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:49,379 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:49,379 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:49,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 20:58:49,379 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1654470361, now seen corresponding path program 115 times [2021-06-05 20:58:49,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:49,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321181423] [2021-06-05 20:58:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:49,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:49,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321181423] [2021-06-05 20:58:49,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321181423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:49,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:49,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:49,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169466137] [2021-06-05 20:58:49,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:49,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:49,461 INFO L87 Difference]: Start difference. First operand 1886 states and 7646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:49,525 INFO L93 Difference]: Finished difference Result 4313 states and 16543 transitions. [2021-06-05 20:58:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:49,534 INFO L225 Difference]: With dead ends: 4313 [2021-06-05 20:58:49,534 INFO L226 Difference]: Without dead ends: 4030 [2021-06-05 20:58:49,534 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2021-06-05 20:58:49,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 1936. [2021-06-05 20:58:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 4.0490956072351425) internal successors, (7835), 1935 states have internal predecessors, (7835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 7835 transitions. [2021-06-05 20:58:49,589 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 7835 transitions. Word has length 25 [2021-06-05 20:58:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:49,589 INFO L482 AbstractCegarLoop]: Abstraction has 1936 states and 7835 transitions. [2021-06-05 20:58:49,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 7835 transitions. [2021-06-05 20:58:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:49,591 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:49,592 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:49,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 20:58:49,592 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:49,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1559434309, now seen corresponding path program 116 times [2021-06-05 20:58:49,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:49,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821267791] [2021-06-05 20:58:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:49,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:49,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821267791] [2021-06-05 20:58:49,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821267791] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:49,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:49,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:49,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396706829] [2021-06-05 20:58:49,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:49,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:49,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:49,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:49,671 INFO L87 Difference]: Start difference. First operand 1936 states and 7835 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:49,742 INFO L93 Difference]: Finished difference Result 4277 states and 16367 transitions. [2021-06-05 20:58:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:49,742 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 [2021-06-05 20:58:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:49,751 INFO L225 Difference]: With dead ends: 4277 [2021-06-05 20:58:49,751 INFO L226 Difference]: Without dead ends: 4002 [2021-06-05 20:58:49,751 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2021-06-05 20:58:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 1908. [2021-06-05 20:58:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 4.055060304142632) internal successors, (7733), 1907 states have internal predecessors, (7733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 7733 transitions. [2021-06-05 20:58:49,801 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 7733 transitions. Word has length 25 [2021-06-05 20:58:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:49,802 INFO L482 AbstractCegarLoop]: Abstraction has 1908 states and 7733 transitions. [2021-06-05 20:58:49,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 7733 transitions. [2021-06-05 20:58:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:49,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:49,804 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:49,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 20:58:49,804 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash 343889339, now seen corresponding path program 117 times [2021-06-05 20:58:49,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:49,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110838263] [2021-06-05 20:58:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:49,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:49,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110838263] [2021-06-05 20:58:49,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110838263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:49,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:49,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:49,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463595227] [2021-06-05 20:58:49,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:49,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:49,875 INFO L87 Difference]: Start difference. First operand 1908 states and 7733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:49,936 INFO L93 Difference]: Finished difference Result 4418 states and 16943 transitions. [2021-06-05 20:58:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:49,944 INFO L225 Difference]: With dead ends: 4418 [2021-06-05 20:58:49,944 INFO L226 Difference]: Without dead ends: 4135 [2021-06-05 20:58:49,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:49,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-06-05 20:58:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 1970. [2021-06-05 20:58:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 4.037582529202641) internal successors, (7950), 1969 states have internal predecessors, (7950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 7950 transitions. [2021-06-05 20:58:49,997 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 7950 transitions. Word has length 25 [2021-06-05 20:58:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:49,997 INFO L482 AbstractCegarLoop]: Abstraction has 1970 states and 7950 transitions. [2021-06-05 20:58:49,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 7950 transitions. [2021-06-05 20:58:49,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:49,999 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:49,999 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:49,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 20:58:49,999 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:50,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1443492421, now seen corresponding path program 118 times [2021-06-05 20:58:50,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:50,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691368364] [2021-06-05 20:58:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:50,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:50,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691368364] [2021-06-05 20:58:50,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691368364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:50,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:50,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:50,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858557830] [2021-06-05 20:58:50,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:50,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:50,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:50,069 INFO L87 Difference]: Start difference. First operand 1970 states and 7950 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:50,120 INFO L93 Difference]: Finished difference Result 4453 states and 17016 transitions. [2021-06-05 20:58:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:50,129 INFO L225 Difference]: With dead ends: 4453 [2021-06-05 20:58:50,129 INFO L226 Difference]: Without dead ends: 4073 [2021-06-05 20:58:50,129 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2021-06-05 20:58:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 1908. [2021-06-05 20:58:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 4.043523859465129) internal successors, (7711), 1907 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 7711 transitions. [2021-06-05 20:58:50,180 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 7711 transitions. Word has length 25 [2021-06-05 20:58:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:50,180 INFO L482 AbstractCegarLoop]: Abstraction has 1908 states and 7711 transitions. [2021-06-05 20:58:50,180 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) [2021-06-05 20:58:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 7711 transitions. [2021-06-05 20:58:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:50,183 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:50,183 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:50,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 20:58:50,183 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:50,183 INFO L82 PathProgramCache]: Analyzing trace with hash 731894301, now seen corresponding path program 119 times [2021-06-05 20:58:50,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:50,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121556450] [2021-06-05 20:58:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:50,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:50,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121556450] [2021-06-05 20:58:50,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121556450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:50,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:50,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:50,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119693034] [2021-06-05 20:58:50,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:50,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:50,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:50,259 INFO L87 Difference]: Start difference. First operand 1908 states and 7711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:50,327 INFO L93 Difference]: Finished difference Result 4328 states and 16542 transitions. [2021-06-05 20:58:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:50,336 INFO L225 Difference]: With dead ends: 4328 [2021-06-05 20:58:50,336 INFO L226 Difference]: Without dead ends: 4081 [2021-06-05 20:58:50,336 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-06-05 20:58:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 1952. [2021-06-05 20:58:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 4.030240902101486) internal successors, (7863), 1951 states have internal predecessors, (7863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 7863 transitions. [2021-06-05 20:58:50,388 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 7863 transitions. Word has length 25 [2021-06-05 20:58:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:50,388 INFO L482 AbstractCegarLoop]: Abstraction has 1952 states and 7863 transitions. [2021-06-05 20:58:50,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 7863 transitions. [2021-06-05 20:58:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:50,391 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:50,391 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:50,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 20:58:50,391 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:50,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1936543483, now seen corresponding path program 120 times [2021-06-05 20:58:50,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:50,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669136214] [2021-06-05 20:58:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:50,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:50,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669136214] [2021-06-05 20:58:50,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669136214] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:50,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:50,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:50,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875825369] [2021-06-05 20:58:50,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:50,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:50,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:50,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:50,487 INFO L87 Difference]: Start difference. First operand 1952 states and 7863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:50,548 INFO L93 Difference]: Finished difference Result 4399 states and 16781 transitions. [2021-06-05 20:58:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:50,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:50,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:50,556 INFO L225 Difference]: With dead ends: 4399 [2021-06-05 20:58:50,556 INFO L226 Difference]: Without dead ends: 3982 [2021-06-05 20:58:50,556 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-06-05 20:58:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 1853. [2021-06-05 20:58:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.08585313174946) internal successors, (7567), 1852 states have internal predecessors, (7567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7567 transitions. [2021-06-05 20:58:50,606 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7567 transitions. Word has length 25 [2021-06-05 20:58:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:50,606 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7567 transitions. [2021-06-05 20:58:50,606 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) [2021-06-05 20:58:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7567 transitions. [2021-06-05 20:58:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:50,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:50,609 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:50,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 20:58:50,609 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1743117179, now seen corresponding path program 121 times [2021-06-05 20:58:50,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:50,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982588889] [2021-06-05 20:58:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:50,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:50,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982588889] [2021-06-05 20:58:50,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982588889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:50,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:50,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:50,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878798729] [2021-06-05 20:58:50,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:50,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:50,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:50,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:50,695 INFO L87 Difference]: Start difference. First operand 1853 states and 7567 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:50,746 INFO L93 Difference]: Finished difference Result 4322 states and 16583 transitions. [2021-06-05 20:58:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:50,747 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 [2021-06-05 20:58:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:50,755 INFO L225 Difference]: With dead ends: 4322 [2021-06-05 20:58:50,755 INFO L226 Difference]: Without dead ends: 4075 [2021-06-05 20:58:50,755 INFO L810 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 [2021-06-05 20:58:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-06-05 20:58:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 1927. [2021-06-05 20:58:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 4.074766355140187) internal successors, (7848), 1926 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7848 transitions. [2021-06-05 20:58:50,808 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7848 transitions. Word has length 25 [2021-06-05 20:58:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:50,808 INFO L482 AbstractCegarLoop]: Abstraction has 1927 states and 7848 transitions. [2021-06-05 20:58:50,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7848 transitions. [2021-06-05 20:58:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:50,810 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:50,810 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:50,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 20:58:50,811 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:50,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:50,811 INFO L82 PathProgramCache]: Analyzing trace with hash 111170013, now seen corresponding path program 122 times [2021-06-05 20:58:50,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:50,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889277141] [2021-06-05 20:58:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:50,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:50,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889277141] [2021-06-05 20:58:50,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889277141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:50,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:50,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:50,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908795921] [2021-06-05 20:58:50,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:50,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:50,895 INFO L87 Difference]: Start difference. First operand 1927 states and 7848 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:50,954 INFO L93 Difference]: Finished difference Result 4393 states and 16822 transitions. [2021-06-05 20:58:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:50,962 INFO L225 Difference]: With dead ends: 4393 [2021-06-05 20:58:50,963 INFO L226 Difference]: Without dead ends: 4031 [2021-06-05 20:58:50,963 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-06-05 20:58:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 1883. [2021-06-05 20:58:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.077577045696068) internal successors, (7674), 1882 states have internal predecessors, (7674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7674 transitions. [2021-06-05 20:58:51,013 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7674 transitions. Word has length 25 [2021-06-05 20:58:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:51,013 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7674 transitions. [2021-06-05 20:58:51,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7674 transitions. [2021-06-05 20:58:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:51,016 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:51,016 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:51,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 20:58:51,016 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1306721639, now seen corresponding path program 123 times [2021-06-05 20:58:51,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:51,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312349621] [2021-06-05 20:58:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:51,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:51,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312349621] [2021-06-05 20:58:51,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312349621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:51,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:51,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:51,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092915731] [2021-06-05 20:58:51,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:51,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:51,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:51,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:51,118 INFO L87 Difference]: Start difference. First operand 1883 states and 7674 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:51,180 INFO L93 Difference]: Finished difference Result 4273 states and 16383 transitions. [2021-06-05 20:58:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:51,180 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 [2021-06-05 20:58:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:51,188 INFO L225 Difference]: With dead ends: 4273 [2021-06-05 20:58:51,188 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 20:58:51,189 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 20:58:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 1911. [2021-06-05 20:58:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 4.063874345549738) internal successors, (7762), 1910 states have internal predecessors, (7762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 7762 transitions. [2021-06-05 20:58:51,240 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 7762 transitions. Word has length 25 [2021-06-05 20:58:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:51,240 INFO L482 AbstractCegarLoop]: Abstraction has 1911 states and 7762 transitions. [2021-06-05 20:58:51,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 7762 transitions. [2021-06-05 20:58:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:51,242 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:51,242 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:51,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 20:58:51,243 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:51,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1398310907, now seen corresponding path program 124 times [2021-06-05 20:58:51,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:51,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57201038] [2021-06-05 20:58:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:51,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:51,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57201038] [2021-06-05 20:58:51,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57201038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:51,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:51,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:51,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981379312] [2021-06-05 20:58:51,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:51,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:51,324 INFO L87 Difference]: Start difference. First operand 1911 states and 7762 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:51,394 INFO L93 Difference]: Finished difference Result 4311 states and 16508 transitions. [2021-06-05 20:58:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:51,402 INFO L225 Difference]: With dead ends: 4311 [2021-06-05 20:58:51,402 INFO L226 Difference]: Without dead ends: 3998 [2021-06-05 20:58:51,402 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-05 20:58:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 1883. [2021-06-05 20:58:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.070138150903294) internal successors, (7660), 1882 states have internal predecessors, (7660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7660 transitions. [2021-06-05 20:58:51,453 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7660 transitions. Word has length 25 [2021-06-05 20:58:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:51,453 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7660 transitions. [2021-06-05 20:58:51,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7660 transitions. [2021-06-05 20:58:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:51,456 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:51,456 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:51,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 20:58:51,456 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:51,456 INFO L82 PathProgramCache]: Analyzing trace with hash 760147421, now seen corresponding path program 125 times [2021-06-05 20:58:51,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:51,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312228432] [2021-06-05 20:58:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:51,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:51,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312228432] [2021-06-05 20:58:51,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312228432] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:51,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:51,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:51,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011037757] [2021-06-05 20:58:51,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:51,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:51,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:51,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:51,533 INFO L87 Difference]: Start difference. First operand 1883 states and 7660 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:51,600 INFO L93 Difference]: Finished difference Result 4433 states and 16987 transitions. [2021-06-05 20:58:51,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:51,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:51,609 INFO L225 Difference]: With dead ends: 4433 [2021-06-05 20:58:51,609 INFO L226 Difference]: Without dead ends: 4148 [2021-06-05 20:58:51,609 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-06-05 20:58:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 1962. [2021-06-05 20:58:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 4.042325344212137) internal successors, (7927), 1961 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 7927 transitions. [2021-06-05 20:58:51,661 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 7927 transitions. Word has length 25 [2021-06-05 20:58:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:51,661 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 7927 transitions. [2021-06-05 20:58:51,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 7927 transitions. [2021-06-05 20:58:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:51,664 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:51,664 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:51,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 20:58:51,664 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1058200379, now seen corresponding path program 126 times [2021-06-05 20:58:51,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:51,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425027109] [2021-06-05 20:58:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:51,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:51,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425027109] [2021-06-05 20:58:51,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425027109] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:51,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:51,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:51,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153771451] [2021-06-05 20:58:51,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:51,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:51,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:51,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:51,742 INFO L87 Difference]: Start difference. First operand 1962 states and 7927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:51,803 INFO L93 Difference]: Finished difference Result 4466 states and 17054 transitions. [2021-06-05 20:58:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:51,804 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 [2021-06-05 20:58:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:51,812 INFO L225 Difference]: With dead ends: 4466 [2021-06-05 20:58:51,812 INFO L226 Difference]: Without dead ends: 4039 [2021-06-05 20:58:51,812 INFO L810 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 [2021-06-05 20:58:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2021-06-05 20:58:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 1853. [2021-06-05 20:58:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.077753779697624) internal successors, (7552), 1852 states have internal predecessors, (7552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7552 transitions. [2021-06-05 20:58:51,863 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7552 transitions. Word has length 25 [2021-06-05 20:58:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:51,863 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7552 transitions. [2021-06-05 20:58:51,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7552 transitions. [2021-06-05 20:58:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:51,865 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:51,865 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:51,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 20:58:51,866 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:51,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1340630427, now seen corresponding path program 127 times [2021-06-05 20:58:51,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:51,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398283775] [2021-06-05 20:58:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:51,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:51,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398283775] [2021-06-05 20:58:51,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398283775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:51,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:51,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:51,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846004950] [2021-06-05 20:58:51,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:51,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:51,950 INFO L87 Difference]: Start difference. First operand 1853 states and 7552 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:51,998 INFO L93 Difference]: Finished difference Result 4295 states and 16484 transitions. [2021-06-05 20:58:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:52,009 INFO L225 Difference]: With dead ends: 4295 [2021-06-05 20:58:52,009 INFO L226 Difference]: Without dead ends: 4048 [2021-06-05 20:58:52,009 INFO L810 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 [2021-06-05 20:58:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2021-06-05 20:58:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 1919. [2021-06-05 20:58:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1918 states have (on average 4.069343065693431) internal successors, (7805), 1918 states have internal predecessors, (7805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 7805 transitions. [2021-06-05 20:58:52,062 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 7805 transitions. Word has length 25 [2021-06-05 20:58:52,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:52,063 INFO L482 AbstractCegarLoop]: Abstraction has 1919 states and 7805 transitions. [2021-06-05 20:58:52,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 7805 transitions. [2021-06-05 20:58:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:52,065 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:52,065 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:52,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 20:58:52,065 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:52,066 INFO L82 PathProgramCache]: Analyzing trace with hash -291316739, now seen corresponding path program 128 times [2021-06-05 20:58:52,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:52,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775891507] [2021-06-05 20:58:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:52,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:52,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775891507] [2021-06-05 20:58:52,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775891507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:52,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:52,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:52,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750718083] [2021-06-05 20:58:52,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:52,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:52,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:52,147 INFO L87 Difference]: Start difference. First operand 1919 states and 7805 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:52,195 INFO L93 Difference]: Finished difference Result 4366 states and 16723 transitions. [2021-06-05 20:58:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:52,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:52,203 INFO L225 Difference]: With dead ends: 4366 [2021-06-05 20:58:52,203 INFO L226 Difference]: Without dead ends: 4004 [2021-06-05 20:58:52,203 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2021-06-05 20:58:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 1875. [2021-06-05 20:58:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.072038420490928) internal successors, (7631), 1874 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7631 transitions. [2021-06-05 20:58:52,254 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7631 transitions. Word has length 25 [2021-06-05 20:58:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:52,254 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7631 transitions. [2021-06-05 20:58:52,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7631 transitions. [2021-06-05 20:58:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:52,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:52,257 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:52,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 20:58:52,257 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1999850843, now seen corresponding path program 129 times [2021-06-05 20:58:52,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:52,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887387559] [2021-06-05 20:58:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:52,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:52,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887387559] [2021-06-05 20:58:52,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887387559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:52,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:52,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:52,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528015029] [2021-06-05 20:58:52,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:52,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:52,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:52,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:52,340 INFO L87 Difference]: Start difference. First operand 1875 states and 7631 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:52,428 INFO L93 Difference]: Finished difference Result 4244 states and 16279 transitions. [2021-06-05 20:58:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:52,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:52,436 INFO L225 Difference]: With dead ends: 4244 [2021-06-05 20:58:52,437 INFO L226 Difference]: Without dead ends: 3997 [2021-06-05 20:58:52,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-06-05 20:58:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 1903. [2021-06-05 20:58:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.058359621451104) internal successors, (7719), 1902 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7719 transitions. [2021-06-05 20:58:52,487 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7719 transitions. Word has length 25 [2021-06-05 20:58:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:52,488 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7719 transitions. [2021-06-05 20:58:52,488 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) [2021-06-05 20:58:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7719 transitions. [2021-06-05 20:58:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:52,490 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:52,490 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:52,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 20:58:52,491 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:52,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:52,491 INFO L82 PathProgramCache]: Analyzing trace with hash 430922301, now seen corresponding path program 130 times [2021-06-05 20:58:52,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:52,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305132694] [2021-06-05 20:58:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:52,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:52,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305132694] [2021-06-05 20:58:52,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305132694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:52,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:52,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:52,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870111904] [2021-06-05 20:58:52,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:52,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:52,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:52,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:52,576 INFO L87 Difference]: Start difference. First operand 1903 states and 7719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:52,643 INFO L93 Difference]: Finished difference Result 4280 states and 16399 transitions. [2021-06-05 20:58:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:52,644 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 [2021-06-05 20:58:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:52,652 INFO L225 Difference]: With dead ends: 4280 [2021-06-05 20:58:52,652 INFO L226 Difference]: Without dead ends: 3969 [2021-06-05 20:58:52,652 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-06-05 20:58:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 1875. [2021-06-05 20:58:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.064567769477055) internal successors, (7617), 1874 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7617 transitions. [2021-06-05 20:58:52,702 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7617 transitions. Word has length 25 [2021-06-05 20:58:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:52,702 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7617 transitions. [2021-06-05 20:58:52,702 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) [2021-06-05 20:58:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7617 transitions. [2021-06-05 20:58:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:52,704 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:52,704 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:52,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 20:58:52,705 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:52,705 INFO L82 PathProgramCache]: Analyzing trace with hash -207241185, now seen corresponding path program 131 times [2021-06-05 20:58:52,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:52,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766963874] [2021-06-05 20:58:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:52,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:52,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766963874] [2021-06-05 20:58:52,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766963874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:52,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:52,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:52,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478206622] [2021-06-05 20:58:52,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:52,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:52,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:52,778 INFO L87 Difference]: Start difference. First operand 1875 states and 7617 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:52,836 INFO L93 Difference]: Finished difference Result 4385 states and 16827 transitions. [2021-06-05 20:58:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:52,844 INFO L225 Difference]: With dead ends: 4385 [2021-06-05 20:58:52,844 INFO L226 Difference]: Without dead ends: 4102 [2021-06-05 20:58:52,844 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-05 20:58:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 1937. [2021-06-05 20:58:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 4.046487603305785) internal successors, (7834), 1936 states have internal predecessors, (7834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 7834 transitions. [2021-06-05 20:58:52,896 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 7834 transitions. Word has length 25 [2021-06-05 20:58:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:52,896 INFO L482 AbstractCegarLoop]: Abstraction has 1937 states and 7834 transitions. [2021-06-05 20:58:52,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:52,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 7834 transitions. [2021-06-05 20:58:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:52,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:52,898 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:52,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 20:58:52,899 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:52,899 INFO L82 PathProgramCache]: Analyzing trace with hash -560380675, now seen corresponding path program 132 times [2021-06-05 20:58:52,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:52,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507763547] [2021-06-05 20:58:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:52,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:52,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507763547] [2021-06-05 20:58:52,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507763547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:52,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:52,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:52,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434635500] [2021-06-05 20:58:52,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:52,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:52,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:52,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:52,974 INFO L87 Difference]: Start difference. First operand 1937 states and 7834 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:53,022 INFO L93 Difference]: Finished difference Result 4420 states and 16900 transitions. [2021-06-05 20:58:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:53,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:53,030 INFO L225 Difference]: With dead ends: 4420 [2021-06-05 20:58:53,030 INFO L226 Difference]: Without dead ends: 4018 [2021-06-05 20:58:53,031 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2021-06-05 20:58:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 1853. [2021-06-05 20:58:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.0718142548596115) internal successors, (7541), 1852 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7541 transitions. [2021-06-05 20:58:53,081 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7541 transitions. Word has length 25 [2021-06-05 20:58:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:53,081 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7541 transitions. [2021-06-05 20:58:53,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7541 transitions. [2021-06-05 20:58:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:53,083 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:53,083 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:53,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 20:58:53,084 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash 909120761, now seen corresponding path program 133 times [2021-06-05 20:58:53,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:53,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468890339] [2021-06-05 20:58:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:53,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:53,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468890339] [2021-06-05 20:58:53,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468890339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:53,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:53,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:53,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623198403] [2021-06-05 20:58:53,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:53,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:53,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:53,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:53,165 INFO L87 Difference]: Start difference. First operand 1853 states and 7541 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:53,219 INFO L93 Difference]: Finished difference Result 4173 states and 16017 transitions. [2021-06-05 20:58:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:53,219 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 [2021-06-05 20:58:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:53,227 INFO L225 Difference]: With dead ends: 4173 [2021-06-05 20:58:53,227 INFO L226 Difference]: Without dead ends: 3926 [2021-06-05 20:58:53,227 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-06-05 20:58:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 1895. [2021-06-05 20:58:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 4.0623020063357975) internal successors, (7694), 1894 states have internal predecessors, (7694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 7694 transitions. [2021-06-05 20:58:53,277 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 7694 transitions. Word has length 25 [2021-06-05 20:58:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:53,277 INFO L482 AbstractCegarLoop]: Abstraction has 1895 states and 7694 transitions. [2021-06-05 20:58:53,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 7694 transitions. [2021-06-05 20:58:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:53,280 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:53,280 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:53,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 20:58:53,280 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:53,280 INFO L82 PathProgramCache]: Analyzing trace with hash -680813989, now seen corresponding path program 134 times [2021-06-05 20:58:53,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:53,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480959800] [2021-06-05 20:58:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:53,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:53,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480959800] [2021-06-05 20:58:53,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480959800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:53,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:53,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:53,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570739861] [2021-06-05 20:58:53,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:53,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:53,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:53,359 INFO L87 Difference]: Start difference. First operand 1895 states and 7694 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:53,417 INFO L93 Difference]: Finished difference Result 4211 states and 16142 transitions. [2021-06-05 20:58:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:53,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:53,425 INFO L225 Difference]: With dead ends: 4211 [2021-06-05 20:58:53,425 INFO L226 Difference]: Without dead ends: 3898 [2021-06-05 20:58:53,425 INFO L810 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 [2021-06-05 20:58:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-05 20:58:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 1867. [2021-06-05 20:58:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.068595927116827) internal successors, (7592), 1866 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7592 transitions. [2021-06-05 20:58:53,474 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7592 transitions. Word has length 25 [2021-06-05 20:58:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:53,474 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7592 transitions. [2021-06-05 20:58:53,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7592 transitions. [2021-06-05 20:58:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:53,477 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:53,477 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:53,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 20:58:53,477 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1990183387, now seen corresponding path program 135 times [2021-06-05 20:58:53,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:53,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630691844] [2021-06-05 20:58:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:53,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:53,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630691844] [2021-06-05 20:58:53,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630691844] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:53,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:53,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:53,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050644217] [2021-06-05 20:58:53,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:53,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:53,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:53,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:53,559 INFO L87 Difference]: Start difference. First operand 1867 states and 7592 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:53,608 INFO L93 Difference]: Finished difference Result 4171 states and 15998 transitions. [2021-06-05 20:58:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:53,608 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 [2021-06-05 20:58:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:53,616 INFO L225 Difference]: With dead ends: 4171 [2021-06-05 20:58:53,616 INFO L226 Difference]: Without dead ends: 3924 [2021-06-05 20:58:53,617 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3924 states. [2021-06-05 20:58:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3924 to 1895. [2021-06-05 20:58:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 4.054910242872228) internal successors, (7680), 1894 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 7680 transitions. [2021-06-05 20:58:53,666 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 7680 transitions. Word has length 25 [2021-06-05 20:58:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:53,666 INFO L482 AbstractCegarLoop]: Abstraction has 1895 states and 7680 transitions. [2021-06-05 20:58:53,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 7680 transitions. [2021-06-05 20:58:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:53,669 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:53,669 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:53,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 20:58:53,669 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:53,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1296485925, now seen corresponding path program 136 times [2021-06-05 20:58:53,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:53,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006155040] [2021-06-05 20:58:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:53,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:53,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006155040] [2021-06-05 20:58:53,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006155040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:53,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:53,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:53,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27347095] [2021-06-05 20:58:53,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:53,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:53,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:53,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:53,761 INFO L87 Difference]: Start difference. First operand 1895 states and 7680 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:53,821 INFO L93 Difference]: Finished difference Result 4207 states and 16118 transitions. [2021-06-05 20:58:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:53,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:53,830 INFO L225 Difference]: With dead ends: 4207 [2021-06-05 20:58:53,830 INFO L226 Difference]: Without dead ends: 3896 [2021-06-05 20:58:53,830 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-05 20:58:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 1867. [2021-06-05 20:58:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.061093247588424) internal successors, (7578), 1866 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7578 transitions. [2021-06-05 20:58:53,880 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7578 transitions. Word has length 25 [2021-06-05 20:58:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:53,880 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7578 transitions. [2021-06-05 20:58:53,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7578 transitions. [2021-06-05 20:58:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:53,882 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:53,883 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:53,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 20:58:53,883 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash -887621955, now seen corresponding path program 137 times [2021-06-05 20:58:53,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:53,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116192044] [2021-06-05 20:58:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:53,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:53,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116192044] [2021-06-05 20:58:53,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116192044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:53,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:53,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:53,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654428755] [2021-06-05 20:58:53,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:53,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:53,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:53,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:53,958 INFO L87 Difference]: Start difference. First operand 1867 states and 7578 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:54,026 INFO L93 Difference]: Finished difference Result 4265 states and 16373 transitions. [2021-06-05 20:58:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:54,026 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 [2021-06-05 20:58:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:54,034 INFO L225 Difference]: With dead ends: 4265 [2021-06-05 20:58:54,035 INFO L226 Difference]: Without dead ends: 3980 [2021-06-05 20:58:54,035 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2021-06-05 20:58:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 1913. [2021-06-05 20:58:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1912 states have (on average 4.043410041841004) internal successors, (7731), 1912 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 7731 transitions. [2021-06-05 20:58:54,085 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 7731 transitions. Word has length 25 [2021-06-05 20:58:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:54,085 INFO L482 AbstractCegarLoop]: Abstraction has 1913 states and 7731 transitions. [2021-06-05 20:58:54,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 7731 transitions. [2021-06-05 20:58:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:54,088 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:54,088 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:54,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 20:58:54,088 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:54,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1364008347, now seen corresponding path program 138 times [2021-06-05 20:58:54,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:54,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690616608] [2021-06-05 20:58:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:54,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:54,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690616608] [2021-06-05 20:58:54,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690616608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:54,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:54,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:54,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497324194] [2021-06-05 20:58:54,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:54,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:54,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:54,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:54,168 INFO L87 Difference]: Start difference. First operand 1913 states and 7731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:54,235 INFO L93 Difference]: Finished difference Result 4263 states and 16322 transitions. [2021-06-05 20:58:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:54,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:54,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:54,244 INFO L225 Difference]: With dead ends: 4263 [2021-06-05 20:58:54,244 INFO L226 Difference]: Without dead ends: 3920 [2021-06-05 20:58:54,244 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-06-05 20:58:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 1853. [2021-06-05 20:58:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.068034557235421) internal successors, (7534), 1852 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7534 transitions. [2021-06-05 20:58:54,304 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7534 transitions. Word has length 25 [2021-06-05 20:58:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:54,304 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7534 transitions. [2021-06-05 20:58:54,305 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) [2021-06-05 20:58:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7534 transitions. [2021-06-05 20:58:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:54,307 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:54,307 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:54,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 20:58:54,307 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:54,308 INFO L82 PathProgramCache]: Analyzing trace with hash 17591327, now seen corresponding path program 139 times [2021-06-05 20:58:54,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:54,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587881205] [2021-06-05 20:58:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:54,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:54,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587881205] [2021-06-05 20:58:54,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587881205] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:54,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:54,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:54,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130650885] [2021-06-05 20:58:54,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:54,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:54,376 INFO L87 Difference]: Start difference. First operand 1853 states and 7534 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:54,435 INFO L93 Difference]: Finished difference Result 4454 states and 17136 transitions. [2021-06-05 20:58:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:54,444 INFO L225 Difference]: With dead ends: 4454 [2021-06-05 20:58:54,444 INFO L226 Difference]: Without dead ends: 4169 [2021-06-05 20:58:54,444 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2021-06-05 20:58:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 1946. [2021-06-05 20:58:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 4.052442159383033) internal successors, (7882), 1945 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 7882 transitions. [2021-06-05 20:58:54,497 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 7882 transitions. Word has length 25 [2021-06-05 20:58:54,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:54,497 INFO L482 AbstractCegarLoop]: Abstraction has 1946 states and 7882 transitions. [2021-06-05 20:58:54,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 7882 transitions. [2021-06-05 20:58:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:54,499 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:54,499 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:54,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 20:58:54,500 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2025745667, now seen corresponding path program 140 times [2021-06-05 20:58:54,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:54,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678672357] [2021-06-05 20:58:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:54,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:54,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678672357] [2021-06-05 20:58:54,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678672357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:54,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:54,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:54,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866337160] [2021-06-05 20:58:54,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:54,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:54,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:54,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:54,569 INFO L87 Difference]: Start difference. First operand 1946 states and 7882 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:54,628 INFO L93 Difference]: Finished difference Result 4452 states and 17085 transitions. [2021-06-05 20:58:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:54,637 INFO L225 Difference]: With dead ends: 4452 [2021-06-05 20:58:54,637 INFO L226 Difference]: Without dead ends: 4123 [2021-06-05 20:58:54,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2021-06-05 20:58:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 1900. [2021-06-05 20:58:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.057925223802001) internal successors, (7706), 1899 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7706 transitions. [2021-06-05 20:58:54,688 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7706 transitions. Word has length 25 [2021-06-05 20:58:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:54,688 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7706 transitions. [2021-06-05 20:58:54,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7706 transitions. [2021-06-05 20:58:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:54,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:54,691 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:54,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 20:58:54,691 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:54,691 INFO L82 PathProgramCache]: Analyzing trace with hash -47042179, now seen corresponding path program 141 times [2021-06-05 20:58:54,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:54,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003914544] [2021-06-05 20:58:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:54,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:54,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003914544] [2021-06-05 20:58:54,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003914544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:54,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:54,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:54,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970138221] [2021-06-05 20:58:54,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:54,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:54,766 INFO L87 Difference]: Start difference. First operand 1900 states and 7706 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:54,825 INFO L93 Difference]: Finished difference Result 4522 states and 17347 transitions. [2021-06-05 20:58:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:54,835 INFO L225 Difference]: With dead ends: 4522 [2021-06-05 20:58:54,835 INFO L226 Difference]: Without dead ends: 4237 [2021-06-05 20:58:54,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2021-06-05 20:58:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 1979. [2021-06-05 20:58:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1978 states have (on average 4.030839231547017) internal successors, (7973), 1978 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 7973 transitions. [2021-06-05 20:58:54,888 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 7973 transitions. Word has length 25 [2021-06-05 20:58:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:54,888 INFO L482 AbstractCegarLoop]: Abstraction has 1979 states and 7973 transitions. [2021-06-05 20:58:54,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 7973 transitions. [2021-06-05 20:58:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:54,891 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:54,891 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:54,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 20:58:54,891 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:54,891 INFO L82 PathProgramCache]: Analyzing trace with hash -602830467, now seen corresponding path program 142 times [2021-06-05 20:58:54,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:54,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808686325] [2021-06-05 20:58:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:54,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:54,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808686325] [2021-06-05 20:58:54,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808686325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:54,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:54,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:54,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5642866] [2021-06-05 20:58:54,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:54,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:54,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:54,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:54,962 INFO L87 Difference]: Start difference. First operand 1979 states and 7973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:55,011 INFO L93 Difference]: Finished difference Result 4555 states and 17414 transitions. [2021-06-05 20:58:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:55,011 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 [2021-06-05 20:58:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:55,020 INFO L225 Difference]: With dead ends: 4555 [2021-06-05 20:58:55,020 INFO L226 Difference]: Without dead ends: 4158 [2021-06-05 20:58:55,020 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2021-06-05 20:58:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 1900. [2021-06-05 20:58:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.0373880989994735) internal successors, (7667), 1899 states have internal predecessors, (7667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7667 transitions. [2021-06-05 20:58:55,071 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7667 transitions. Word has length 25 [2021-06-05 20:58:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:55,071 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7667 transitions. [2021-06-05 20:58:55,071 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) [2021-06-05 20:58:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7667 transitions. [2021-06-05 20:58:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:55,074 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:55,074 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:55,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 20:58:55,074 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:55,074 INFO L82 PathProgramCache]: Analyzing trace with hash 935305435, now seen corresponding path program 143 times [2021-06-05 20:58:55,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:55,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734049168] [2021-06-05 20:58:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:55,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:55,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734049168] [2021-06-05 20:58:55,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734049168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:55,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:55,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:55,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889788659] [2021-06-05 20:58:55,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:55,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:55,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:55,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:55,144 INFO L87 Difference]: Start difference. First operand 1900 states and 7667 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:55,221 INFO L93 Difference]: Finished difference Result 4501 states and 17247 transitions. [2021-06-05 20:58:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:55,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:55,230 INFO L225 Difference]: With dead ends: 4501 [2021-06-05 20:58:55,230 INFO L226 Difference]: Without dead ends: 4218 [2021-06-05 20:58:55,230 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2021-06-05 20:58:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 1962. [2021-06-05 20:58:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 4.020397756246813) internal successors, (7884), 1961 states have internal predecessors, (7884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 7884 transitions. [2021-06-05 20:58:55,284 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 7884 transitions. Word has length 25 [2021-06-05 20:58:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:55,285 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 7884 transitions. [2021-06-05 20:58:55,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 7884 transitions. [2021-06-05 20:58:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:55,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:55,288 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:55,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 20:58:55,288 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:55,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1422084163, now seen corresponding path program 144 times [2021-06-05 20:58:55,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:55,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771075719] [2021-06-05 20:58:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:55,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:55,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771075719] [2021-06-05 20:58:55,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771075719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:55,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:55,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:55,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64509770] [2021-06-05 20:58:55,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:55,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:55,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:55,363 INFO L87 Difference]: Start difference. First operand 1962 states and 7884 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:55,417 INFO L93 Difference]: Finished difference Result 4536 states and 17320 transitions. [2021-06-05 20:58:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:55,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:55,426 INFO L225 Difference]: With dead ends: 4536 [2021-06-05 20:58:55,426 INFO L226 Difference]: Without dead ends: 4090 [2021-06-05 20:58:55,426 INFO L810 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 [2021-06-05 20:58:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-06-05 20:58:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 1834. [2021-06-05 20:58:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.07746863066012) internal successors, (7474), 1833 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7474 transitions. [2021-06-05 20:58:55,480 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7474 transitions. Word has length 25 [2021-06-05 20:58:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:55,480 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7474 transitions. [2021-06-05 20:58:55,480 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) [2021-06-05 20:58:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7474 transitions. [2021-06-05 20:58:55,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:55,483 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:55,483 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:55,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 20:58:55,483 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash 468373021, now seen corresponding path program 145 times [2021-06-05 20:58:55,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:55,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645242949] [2021-06-05 20:58:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:55,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:55,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645242949] [2021-06-05 20:58:55,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645242949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:55,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:55,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:55,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628462468] [2021-06-05 20:58:55,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:55,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:55,577 INFO L87 Difference]: Start difference. First operand 1834 states and 7474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:55,631 INFO L93 Difference]: Finished difference Result 4226 states and 16188 transitions. [2021-06-05 20:58:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:55,632 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 [2021-06-05 20:58:55,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:55,640 INFO L225 Difference]: With dead ends: 4226 [2021-06-05 20:58:55,640 INFO L226 Difference]: Without dead ends: 3979 [2021-06-05 20:58:55,640 INFO L810 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 [2021-06-05 20:58:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-06-05 20:58:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 1922. [2021-06-05 20:58:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 4.071837584591359) internal successors, (7822), 1921 states have internal predecessors, (7822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 7822 transitions. [2021-06-05 20:58:55,690 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 7822 transitions. Word has length 25 [2021-06-05 20:58:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:55,691 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 7822 transitions. [2021-06-05 20:58:55,691 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) [2021-06-05 20:58:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 7822 transitions. [2021-06-05 20:58:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:55,693 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:55,693 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:55,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 20:58:55,693 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:55,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:55,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1163574145, now seen corresponding path program 146 times [2021-06-05 20:58:55,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:55,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312086911] [2021-06-05 20:58:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:55,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:55,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312086911] [2021-06-05 20:58:55,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312086911] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:55,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:55,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:55,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187547834] [2021-06-05 20:58:55,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:55,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:55,775 INFO L87 Difference]: Start difference. First operand 1922 states and 7822 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:55,827 INFO L93 Difference]: Finished difference Result 4297 states and 16427 transitions. [2021-06-05 20:58:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:55,827 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 [2021-06-05 20:58:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:55,835 INFO L225 Difference]: With dead ends: 4297 [2021-06-05 20:58:55,835 INFO L226 Difference]: Without dead ends: 3935 [2021-06-05 20:58:55,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-05 20:58:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 1878. [2021-06-05 20:58:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 4.074587107085775) internal successors, (7648), 1877 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 7648 transitions. [2021-06-05 20:58:55,887 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 7648 transitions. Word has length 25 [2021-06-05 20:58:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:55,887 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 7648 transitions. [2021-06-05 20:58:55,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 7648 transitions. [2021-06-05 20:58:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:55,889 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:55,889 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:55,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 20:58:55,890 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:55,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:55,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1713501499, now seen corresponding path program 147 times [2021-06-05 20:58:55,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:55,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228408198] [2021-06-05 20:58:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:55,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:55,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228408198] [2021-06-05 20:58:55,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228408198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:55,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:55,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:55,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377954983] [2021-06-05 20:58:55,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:55,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:55,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:55,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:55,978 INFO L87 Difference]: Start difference. First operand 1878 states and 7648 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:56,032 INFO L93 Difference]: Finished difference Result 4177 states and 15988 transitions. [2021-06-05 20:58:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:56,041 INFO L225 Difference]: With dead ends: 4177 [2021-06-05 20:58:56,041 INFO L226 Difference]: Without dead ends: 3930 [2021-06-05 20:58:56,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-06-05 20:58:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 1906. [2021-06-05 20:58:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 4.060892388451443) internal successors, (7736), 1905 states have internal predecessors, (7736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 7736 transitions. [2021-06-05 20:58:56,091 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 7736 transitions. Word has length 25 [2021-06-05 20:58:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:56,091 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 7736 transitions. [2021-06-05 20:58:56,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 7736 transitions. [2021-06-05 20:58:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:56,094 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:56,094 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:56,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 20:58:56,094 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash 123566749, now seen corresponding path program 148 times [2021-06-05 20:58:56,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:56,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968083821] [2021-06-05 20:58:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:56,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:56,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968083821] [2021-06-05 20:58:56,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968083821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:56,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:56,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:56,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358257904] [2021-06-05 20:58:56,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:56,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:56,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:56,194 INFO L87 Difference]: Start difference. First operand 1906 states and 7736 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:56,256 INFO L93 Difference]: Finished difference Result 4215 states and 16113 transitions. [2021-06-05 20:58:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:56,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:56,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:56,264 INFO L225 Difference]: With dead ends: 4215 [2021-06-05 20:58:56,265 INFO L226 Difference]: Without dead ends: 3902 [2021-06-05 20:58:56,265 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2021-06-05 20:58:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 1878. [2021-06-05 20:58:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 4.067128396377198) internal successors, (7634), 1877 states have internal predecessors, (7634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 7634 transitions. [2021-06-05 20:58:56,317 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 7634 transitions. Word has length 25 [2021-06-05 20:58:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:56,317 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 7634 transitions. [2021-06-05 20:58:56,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 7634 transitions. [2021-06-05 20:58:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:56,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:56,320 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:56,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 20:58:56,320 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash -514596737, now seen corresponding path program 149 times [2021-06-05 20:58:56,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:56,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025014259] [2021-06-05 20:58:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:56,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:56,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025014259] [2021-06-05 20:58:56,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025014259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:56,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:56,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:56,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688894740] [2021-06-05 20:58:56,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:56,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:56,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:56,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:56,401 INFO L87 Difference]: Start difference. First operand 1878 states and 7634 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:56,471 INFO L93 Difference]: Finished difference Result 4337 states and 16592 transitions. [2021-06-05 20:58:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:56,480 INFO L225 Difference]: With dead ends: 4337 [2021-06-05 20:58:56,480 INFO L226 Difference]: Without dead ends: 4052 [2021-06-05 20:58:56,480 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-06-05 20:58:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 1957. [2021-06-05 20:58:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1956 states have (on average 4.039366053169734) internal successors, (7901), 1956 states have internal predecessors, (7901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 7901 transitions. [2021-06-05 20:58:56,532 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 7901 transitions. Word has length 25 [2021-06-05 20:58:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:56,532 INFO L482 AbstractCegarLoop]: Abstraction has 1957 states and 7901 transitions. [2021-06-05 20:58:56,532 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) [2021-06-05 20:58:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 7901 transitions. [2021-06-05 20:58:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:56,535 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:56,535 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:56,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 20:58:56,535 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:56,535 INFO L82 PathProgramCache]: Analyzing trace with hash -216543779, now seen corresponding path program 150 times [2021-06-05 20:58:56,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:56,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865484740] [2021-06-05 20:58:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:56,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:56,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865484740] [2021-06-05 20:58:56,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865484740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:56,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:56,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:56,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658562623] [2021-06-05 20:58:56,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:56,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:56,612 INFO L87 Difference]: Start difference. First operand 1957 states and 7901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:56,664 INFO L93 Difference]: Finished difference Result 4370 states and 16659 transitions. [2021-06-05 20:58:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:56,664 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 [2021-06-05 20:58:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:56,672 INFO L225 Difference]: With dead ends: 4370 [2021-06-05 20:58:56,672 INFO L226 Difference]: Without dead ends: 3943 [2021-06-05 20:58:56,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2021-06-05 20:58:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 1848. [2021-06-05 20:58:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 4.075257173795344) internal successors, (7527), 1847 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 7527 transitions. [2021-06-05 20:58:56,721 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 7527 transitions. Word has length 25 [2021-06-05 20:58:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:56,721 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 7527 transitions. [2021-06-05 20:58:56,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 7527 transitions. [2021-06-05 20:58:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:56,724 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:56,724 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:56,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 20:58:56,724 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:56,724 INFO L82 PathProgramCache]: Analyzing trace with hash 476041019, now seen corresponding path program 151 times [2021-06-05 20:58:56,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:56,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946313728] [2021-06-05 20:58:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:56,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:56,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946313728] [2021-06-05 20:58:56,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946313728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:56,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:56,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:56,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640648361] [2021-06-05 20:58:56,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:56,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:56,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:56,805 INFO L87 Difference]: Start difference. First operand 1848 states and 7527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:56,858 INFO L93 Difference]: Finished difference Result 4119 states and 15766 transitions. [2021-06-05 20:58:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:56,866 INFO L225 Difference]: With dead ends: 4119 [2021-06-05 20:58:56,867 INFO L226 Difference]: Without dead ends: 3872 [2021-06-05 20:58:56,867 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-06-05 20:58:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 1912. [2021-06-05 20:58:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 4.066457352171638) internal successors, (7771), 1911 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 7771 transitions. [2021-06-05 20:58:56,916 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 7771 transitions. Word has length 25 [2021-06-05 20:58:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:56,916 INFO L482 AbstractCegarLoop]: Abstraction has 1912 states and 7771 transitions. [2021-06-05 20:58:56,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 7771 transitions. [2021-06-05 20:58:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:56,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:56,919 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:56,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 20:58:56,919 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:56,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1155906147, now seen corresponding path program 152 times [2021-06-05 20:58:56,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:56,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48759509] [2021-06-05 20:58:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:56,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:56,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48759509] [2021-06-05 20:58:56,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48759509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:56,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:56,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:56,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834053802] [2021-06-05 20:58:56,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:57,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:57,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:57,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:57,000 INFO L87 Difference]: Start difference. First operand 1912 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:57,057 INFO L93 Difference]: Finished difference Result 4190 states and 16005 transitions. [2021-06-05 20:58:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:57,065 INFO L225 Difference]: With dead ends: 4190 [2021-06-05 20:58:57,065 INFO L226 Difference]: Without dead ends: 3828 [2021-06-05 20:58:57,065 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2021-06-05 20:58:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 1868. [2021-06-05 20:58:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 4.070166041778254) internal successors, (7599), 1867 states have internal predecessors, (7599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 7599 transitions. [2021-06-05 20:58:57,113 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 7599 transitions. Word has length 25 [2021-06-05 20:58:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:57,113 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 7599 transitions. [2021-06-05 20:58:57,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 7599 transitions. [2021-06-05 20:58:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:57,116 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:57,116 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:57,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 20:58:57,116 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:57,116 INFO L82 PathProgramCache]: Analyzing trace with hash 232191739, now seen corresponding path program 153 times [2021-06-05 20:58:57,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:57,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785156192] [2021-06-05 20:58:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:57,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:57,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785156192] [2021-06-05 20:58:57,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785156192] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:57,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:57,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:57,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487657939] [2021-06-05 20:58:57,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:57,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:57,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:57,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:57,189 INFO L87 Difference]: Start difference. First operand 1868 states and 7599 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:57,245 INFO L93 Difference]: Finished difference Result 3988 states and 15267 transitions. [2021-06-05 20:58:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:57,246 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 [2021-06-05 20:58:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:57,253 INFO L225 Difference]: With dead ends: 3988 [2021-06-05 20:58:57,253 INFO L226 Difference]: Without dead ends: 3741 [2021-06-05 20:58:57,254 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-06-05 20:58:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 1892. [2021-06-05 20:58:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.058699101004759) internal successors, (7675), 1891 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7675 transitions. [2021-06-05 20:58:57,302 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7675 transitions. Word has length 25 [2021-06-05 20:58:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:57,302 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7675 transitions. [2021-06-05 20:58:57,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7675 transitions. [2021-06-05 20:58:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:57,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:57,305 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:57,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 20:58:57,305 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1294724387, now seen corresponding path program 154 times [2021-06-05 20:58:57,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:57,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091177760] [2021-06-05 20:58:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:57,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:57,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091177760] [2021-06-05 20:58:57,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091177760] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:57,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:57,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:57,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867938538] [2021-06-05 20:58:57,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:57,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:57,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:57,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:57,386 INFO L87 Difference]: Start difference. First operand 1892 states and 7675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:57,464 INFO L93 Difference]: Finished difference Result 3812 states and 14690 transitions. [2021-06-05 20:58:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:57,471 INFO L225 Difference]: With dead ends: 3812 [2021-06-05 20:58:57,472 INFO L226 Difference]: Without dead ends: 3525 [2021-06-05 20:58:57,472 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-06-05 20:58:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 1868. [2021-06-05 20:58:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 4.06373861810391) internal successors, (7587), 1867 states have internal predecessors, (7587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 7587 transitions. [2021-06-05 20:58:57,519 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 7587 transitions. Word has length 25 [2021-06-05 20:58:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:57,519 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 7587 transitions. [2021-06-05 20:58:57,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 7587 transitions. [2021-06-05 20:58:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:57,521 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:57,521 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:57,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 20:58:57,521 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1932887873, now seen corresponding path program 155 times [2021-06-05 20:58:57,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:57,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354964475] [2021-06-05 20:58:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:57,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:57,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354964475] [2021-06-05 20:58:57,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354964475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:57,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:57,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:57,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759773506] [2021-06-05 20:58:57,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:57,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:57,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:57,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:57,604 INFO L87 Difference]: Start difference. First operand 1868 states and 7587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:57,665 INFO L93 Difference]: Finished difference Result 4159 states and 15918 transitions. [2021-06-05 20:58:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:57,666 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 [2021-06-05 20:58:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:57,673 INFO L225 Difference]: With dead ends: 4159 [2021-06-05 20:58:57,673 INFO L226 Difference]: Without dead ends: 3896 [2021-06-05 20:58:57,674 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-05 20:58:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 1920. [2021-06-05 20:58:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 4.0495049504950495) internal successors, (7771), 1919 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 7771 transitions. [2021-06-05 20:58:57,723 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 7771 transitions. Word has length 25 [2021-06-05 20:58:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:57,723 INFO L482 AbstractCegarLoop]: Abstraction has 1920 states and 7771 transitions. [2021-06-05 20:58:57,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 7771 transitions. [2021-06-05 20:58:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:57,726 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:57,726 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:57,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 20:58:57,726 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash 706555037, now seen corresponding path program 156 times [2021-06-05 20:58:57,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:57,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201538868] [2021-06-05 20:58:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:57,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:57,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201538868] [2021-06-05 20:58:57,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201538868] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:57,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:57,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:57,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573741885] [2021-06-05 20:58:57,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:57,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:57,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:57,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:57,813 INFO L87 Difference]: Start difference. First operand 1920 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:57,863 INFO L93 Difference]: Finished difference Result 4087 states and 15606 transitions. [2021-06-05 20:58:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:57,871 INFO L225 Difference]: With dead ends: 4087 [2021-06-05 20:58:57,871 INFO L226 Difference]: Without dead ends: 3697 [2021-06-05 20:58:57,871 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-06-05 20:58:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1848. [2021-06-05 20:58:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 4.069842988630211) internal successors, (7517), 1847 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 7517 transitions. [2021-06-05 20:58:57,919 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 7517 transitions. Word has length 25 [2021-06-05 20:58:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:57,919 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 7517 transitions. [2021-06-05 20:58:57,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 7517 transitions. [2021-06-05 20:58:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:57,921 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:57,921 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:57,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 20:58:57,921 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash 414817945, now seen corresponding path program 157 times [2021-06-05 20:58:57,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:57,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978996307] [2021-06-05 20:58:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:58,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:58,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978996307] [2021-06-05 20:58:58,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978996307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:58,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:58,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:58,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138398111] [2021-06-05 20:58:58,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:58,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:58,006 INFO L87 Difference]: Start difference. First operand 1848 states and 7517 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:58,076 INFO L93 Difference]: Finished difference Result 4013 states and 15364 transitions. [2021-06-05 20:58:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:58,084 INFO L225 Difference]: With dead ends: 4013 [2021-06-05 20:58:58,084 INFO L226 Difference]: Without dead ends: 3766 [2021-06-05 20:58:58,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2021-06-05 20:58:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 1888. [2021-06-05 20:58:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.059883412824589) internal successors, (7661), 1887 states have internal predecessors, (7661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7661 transitions. [2021-06-05 20:58:58,133 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7661 transitions. Word has length 25 [2021-06-05 20:58:58,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:58,133 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7661 transitions. [2021-06-05 20:58:58,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7661 transitions. [2021-06-05 20:58:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:58,136 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:58,136 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:58,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 20:58:58,136 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1175116805, now seen corresponding path program 158 times [2021-06-05 20:58:58,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:58,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127107545] [2021-06-05 20:58:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:58,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:58,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127107545] [2021-06-05 20:58:58,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127107545] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:58,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:58,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:58,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186972773] [2021-06-05 20:58:58,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:58,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:58,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:58,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:58,219 INFO L87 Difference]: Start difference. First operand 1888 states and 7661 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:58,279 INFO L93 Difference]: Finished difference Result 4051 states and 15489 transitions. [2021-06-05 20:58:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:58,279 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 [2021-06-05 20:58:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:58,287 INFO L225 Difference]: With dead ends: 4051 [2021-06-05 20:58:58,287 INFO L226 Difference]: Without dead ends: 3738 [2021-06-05 20:58:58,287 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-06-05 20:58:58,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 1860. [2021-06-05 20:58:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 4.067240451855836) internal successors, (7561), 1859 states have internal predecessors, (7561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 7561 transitions. [2021-06-05 20:58:58,335 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 7561 transitions. Word has length 25 [2021-06-05 20:58:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:58,336 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 7561 transitions. [2021-06-05 20:58:58,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 7561 transitions. [2021-06-05 20:58:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:58,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:58,338 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:58,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 20:58:58,338 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:58,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1079860613, now seen corresponding path program 159 times [2021-06-05 20:58:58,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:58,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486633921] [2021-06-05 20:58:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:58,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:58,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486633921] [2021-06-05 20:58:58,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486633921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:58,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:58,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:58,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096010767] [2021-06-05 20:58:58,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:58,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:58,436 INFO L87 Difference]: Start difference. First operand 1860 states and 7561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:58,492 INFO L93 Difference]: Finished difference Result 3931 states and 15051 transitions. [2021-06-05 20:58:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:58,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:58,500 INFO L225 Difference]: With dead ends: 3931 [2021-06-05 20:58:58,500 INFO L226 Difference]: Without dead ends: 3684 [2021-06-05 20:58:58,500 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-05 20:58:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1884. [2021-06-05 20:58:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 4.055762081784387) internal successors, (7637), 1883 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 7637 transitions. [2021-06-05 20:58:58,548 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 7637 transitions. Word has length 25 [2021-06-05 20:58:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:58,548 INFO L482 AbstractCegarLoop]: Abstraction has 1884 states and 7637 transitions. [2021-06-05 20:58:58,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 7637 transitions. [2021-06-05 20:58:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:58,551 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:58,551 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:58,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 20:58:58,551 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1272834683, now seen corresponding path program 160 times [2021-06-05 20:58:58,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:58,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17543546] [2021-06-05 20:58:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:58,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:58,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17543546] [2021-06-05 20:58:58,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17543546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:58,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:58,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:58,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837994588] [2021-06-05 20:58:58,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:58,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:58,630 INFO L87 Difference]: Start difference. First operand 1884 states and 7637 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:58,690 INFO L93 Difference]: Finished difference Result 3755 states and 14474 transitions. [2021-06-05 20:58:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:58,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:58,697 INFO L225 Difference]: With dead ends: 3755 [2021-06-05 20:58:58,697 INFO L226 Difference]: Without dead ends: 3468 [2021-06-05 20:58:58,698 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2021-06-05 20:58:58,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 1860. [2021-06-05 20:58:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 4.060785368477676) internal successors, (7549), 1859 states have internal predecessors, (7549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 7549 transitions. [2021-06-05 20:58:58,744 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 7549 transitions. Word has length 25 [2021-06-05 20:58:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:58,744 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 7549 transitions. [2021-06-05 20:58:58,744 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) [2021-06-05 20:58:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 7549 transitions. [2021-06-05 20:58:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:58,746 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:58,746 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:58,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 20:58:58,747 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:58,747 INFO L82 PathProgramCache]: Analyzing trace with hash 337301341, now seen corresponding path program 161 times [2021-06-05 20:58:58,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:58,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027366023] [2021-06-05 20:58:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:58,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:58,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027366023] [2021-06-05 20:58:58,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027366023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:58,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:58,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:58,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786689831] [2021-06-05 20:58:58,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:58,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:58,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:58,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:58,835 INFO L87 Difference]: Start difference. First operand 1860 states and 7549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:58,898 INFO L93 Difference]: Finished difference Result 3981 states and 15248 transitions. [2021-06-05 20:58:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:58,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:58,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:58,906 INFO L225 Difference]: With dead ends: 3981 [2021-06-05 20:58:58,906 INFO L226 Difference]: Without dead ends: 3696 [2021-06-05 20:58:58,906 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-06-05 20:58:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1896. [2021-06-05 20:58:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.046965699208443) internal successors, (7669), 1895 states have internal predecessors, (7669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7669 transitions. [2021-06-05 20:58:58,955 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7669 transitions. Word has length 25 [2021-06-05 20:58:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:58,955 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7669 transitions. [2021-06-05 20:58:58,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7669 transitions. [2021-06-05 20:58:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:58,958 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:58,958 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:58,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 20:58:58,958 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:58,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:58,958 INFO L82 PathProgramCache]: Analyzing trace with hash -403650757, now seen corresponding path program 162 times [2021-06-05 20:58:58,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:58,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467731194] [2021-06-05 20:58:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:59,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:59,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467731194] [2021-06-05 20:58:59,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467731194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:59,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:59,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:59,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199206704] [2021-06-05 20:58:59,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:59,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:59,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:59,045 INFO L87 Difference]: Start difference. First operand 1896 states and 7669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:59,113 INFO L93 Difference]: Finished difference Result 3767 states and 14506 transitions. [2021-06-05 20:58:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:59,120 INFO L225 Difference]: With dead ends: 3767 [2021-06-05 20:58:59,121 INFO L226 Difference]: Without dead ends: 3456 [2021-06-05 20:58:59,121 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2021-06-05 20:58:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 1848. [2021-06-05 20:58:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 4.066594477531131) internal successors, (7511), 1847 states have internal predecessors, (7511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 7511 transitions. [2021-06-05 20:58:59,167 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 7511 transitions. Word has length 25 [2021-06-05 20:58:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:59,167 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 7511 transitions. [2021-06-05 20:58:59,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 7511 transitions. [2021-06-05 20:58:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:59,169 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:59,169 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:59,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 20:58:59,170 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:59,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:59,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1242514623, now seen corresponding path program 163 times [2021-06-05 20:58:59,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:59,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241671043] [2021-06-05 20:58:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:59,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:59,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241671043] [2021-06-05 20:58:59,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241671043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:59,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:59,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:59,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365592790] [2021-06-05 20:58:59,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:59,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:59,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:59,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:59,258 INFO L87 Difference]: Start difference. First operand 1848 states and 7511 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:59,320 INFO L93 Difference]: Finished difference Result 4275 states and 16419 transitions. [2021-06-05 20:58:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:59,328 INFO L225 Difference]: With dead ends: 4275 [2021-06-05 20:58:59,328 INFO L226 Difference]: Without dead ends: 3990 [2021-06-05 20:58:59,328 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2021-06-05 20:58:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 1918. [2021-06-05 20:58:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1917 states have (on average 4.059467918622849) internal successors, (7782), 1917 states have internal predecessors, (7782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 7782 transitions. [2021-06-05 20:58:59,379 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 7782 transitions. Word has length 25 [2021-06-05 20:58:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:59,379 INFO L482 AbstractCegarLoop]: Abstraction has 1918 states and 7782 transitions. [2021-06-05 20:58:59,379 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) [2021-06-05 20:58:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 7782 transitions. [2021-06-05 20:58:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:59,381 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:59,381 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:59,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 20:58:59,382 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash 501562525, now seen corresponding path program 164 times [2021-06-05 20:58:59,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:59,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073497020] [2021-06-05 20:58:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:59,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:59,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073497020] [2021-06-05 20:58:59,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073497020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:59,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:59,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:59,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866869895] [2021-06-05 20:58:59,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:59,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:59,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:59,479 INFO L87 Difference]: Start difference. First operand 1918 states and 7782 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:59,550 INFO L93 Difference]: Finished difference Result 4253 states and 16302 transitions. [2021-06-05 20:58:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:59,550 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 [2021-06-05 20:58:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:59,559 INFO L225 Difference]: With dead ends: 4253 [2021-06-05 20:58:59,559 INFO L226 Difference]: Without dead ends: 3954 [2021-06-05 20:58:59,559 INFO L810 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 [2021-06-05 20:58:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-06-05 20:58:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 1882. [2021-06-05 20:58:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.0637958532695375) internal successors, (7644), 1881 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7644 transitions. [2021-06-05 20:58:59,610 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7644 transitions. Word has length 25 [2021-06-05 20:58:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:59,611 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7644 transitions. [2021-06-05 20:58:59,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7644 transitions. [2021-06-05 20:58:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:59,613 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:59,613 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:59,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 20:58:59,613 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:59,614 INFO L82 PathProgramCache]: Analyzing trace with hash -578520803, now seen corresponding path program 165 times [2021-06-05 20:58:59,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:59,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237620512] [2021-06-05 20:58:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:59,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:59,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237620512] [2021-06-05 20:58:59,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237620512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:59,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:59,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:59,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642195799] [2021-06-05 20:58:59,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:59,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:59,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:59,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:59,697 INFO L87 Difference]: Start difference. First operand 1882 states and 7644 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:59,754 INFO L93 Difference]: Finished difference Result 4294 states and 16440 transitions. [2021-06-05 20:58:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:59,754 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 [2021-06-05 20:58:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:59,763 INFO L225 Difference]: With dead ends: 4294 [2021-06-05 20:58:59,763 INFO L226 Difference]: Without dead ends: 4009 [2021-06-05 20:58:59,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:59,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2021-06-05 20:58:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 1961. [2021-06-05 20:58:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 4.036224489795918) internal successors, (7911), 1960 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 7911 transitions. [2021-06-05 20:58:59,814 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 7911 transitions. Word has length 25 [2021-06-05 20:58:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:58:59,814 INFO L482 AbstractCegarLoop]: Abstraction has 1961 states and 7911 transitions. [2021-06-05 20:58:59,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 7911 transitions. [2021-06-05 20:58:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:58:59,817 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:58:59,817 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:58:59,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 20:58:59,817 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:58:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:58:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1441432093, now seen corresponding path program 166 times [2021-06-05 20:58:59,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:58:59,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292136680] [2021-06-05 20:58:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:58:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:58:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:58:59,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:58:59,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292136680] [2021-06-05 20:58:59,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292136680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:58:59,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:58:59,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:58:59,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404401514] [2021-06-05 20:58:59,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:58:59,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:58:59,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:58:59,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:58:59,897 INFO L87 Difference]: Start difference. First operand 1961 states and 7911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:58:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:58:59,954 INFO L93 Difference]: Finished difference Result 4327 states and 16507 transitions. [2021-06-05 20:58:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:58:59,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:58:59,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:58:59,962 INFO L225 Difference]: With dead ends: 4327 [2021-06-05 20:58:59,962 INFO L226 Difference]: Without dead ends: 3930 [2021-06-05 20:58:59,962 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:58:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-06-05 20:59:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 1882. [2021-06-05 20:59:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.045720361509836) internal successors, (7610), 1881 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7610 transitions. [2021-06-05 20:59:00,026 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7610 transitions. Word has length 25 [2021-06-05 20:59:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:00,026 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7610 transitions. [2021-06-05 20:59:00,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7610 transitions. [2021-06-05 20:59:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:00,028 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:00,028 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:00,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 20:59:00,028 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash -832353669, now seen corresponding path program 167 times [2021-06-05 20:59:00,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:00,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203700639] [2021-06-05 20:59:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:00,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:00,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203700639] [2021-06-05 20:59:00,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203700639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:00,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:00,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:00,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243511161] [2021-06-05 20:59:00,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:00,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:00,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:00,112 INFO L87 Difference]: Start difference. First operand 1882 states and 7610 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:00,169 INFO L93 Difference]: Finished difference Result 4223 states and 16150 transitions. [2021-06-05 20:59:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:00,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:00,177 INFO L225 Difference]: With dead ends: 4223 [2021-06-05 20:59:00,178 INFO L226 Difference]: Without dead ends: 3960 [2021-06-05 20:59:00,178 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states. [2021-06-05 20:59:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 1934. [2021-06-05 20:59:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 4.03207449560269) internal successors, (7794), 1933 states have internal predecessors, (7794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7794 transitions. [2021-06-05 20:59:00,228 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7794 transitions. Word has length 25 [2021-06-05 20:59:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:00,228 INFO L482 AbstractCegarLoop]: Abstraction has 1934 states and 7794 transitions. [2021-06-05 20:59:00,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7794 transitions. [2021-06-05 20:59:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:00,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:00,230 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:00,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 20:59:00,230 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:00,231 INFO L82 PathProgramCache]: Analyzing trace with hash -614002083, now seen corresponding path program 168 times [2021-06-05 20:59:00,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:00,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372880147] [2021-06-05 20:59:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:00,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:00,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372880147] [2021-06-05 20:59:00,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372880147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:00,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:00,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:00,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206580154] [2021-06-05 20:59:00,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:00,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:00,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:00,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:00,326 INFO L87 Difference]: Start difference. First operand 1934 states and 7794 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:00,382 INFO L93 Difference]: Finished difference Result 4151 states and 15838 transitions. [2021-06-05 20:59:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:00,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:00,390 INFO L225 Difference]: With dead ends: 4151 [2021-06-05 20:59:00,390 INFO L226 Difference]: Without dead ends: 3733 [2021-06-05 20:59:00,390 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:00,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2021-06-05 20:59:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 1834. [2021-06-05 20:59:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.073649754500818) internal successors, (7467), 1833 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7467 transitions. [2021-06-05 20:59:00,438 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7467 transitions. Word has length 25 [2021-06-05 20:59:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:00,438 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7467 transitions. [2021-06-05 20:59:00,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7467 transitions. [2021-06-05 20:59:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:00,441 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:00,441 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:00,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 20:59:00,441 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash 870199643, now seen corresponding path program 169 times [2021-06-05 20:59:00,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:00,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848734119] [2021-06-05 20:59:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:00,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:00,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848734119] [2021-06-05 20:59:00,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848734119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:00,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:00,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:00,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500921022] [2021-06-05 20:59:00,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:00,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:00,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:00,519 INFO L87 Difference]: Start difference. First operand 1834 states and 7467 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:00,568 INFO L93 Difference]: Finished difference Result 4168 states and 15997 transitions. [2021-06-05 20:59:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:00,569 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 [2021-06-05 20:59:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:00,577 INFO L225 Difference]: With dead ends: 4168 [2021-06-05 20:59:00,577 INFO L226 Difference]: Without dead ends: 3921 [2021-06-05 20:59:00,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2021-06-05 20:59:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 1910. [2021-06-05 20:59:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 4.070717653221582) internal successors, (7771), 1909 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 7771 transitions. [2021-06-05 20:59:00,627 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 7771 transitions. Word has length 25 [2021-06-05 20:59:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:00,628 INFO L482 AbstractCegarLoop]: Abstraction has 1910 states and 7771 transitions. [2021-06-05 20:59:00,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 7771 transitions. [2021-06-05 20:59:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:00,630 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:00,630 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:00,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 20:59:00,630 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash -761747523, now seen corresponding path program 170 times [2021-06-05 20:59:00,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:00,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805566258] [2021-06-05 20:59:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:00,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:00,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805566258] [2021-06-05 20:59:00,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805566258] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:00,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:00,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:00,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910739177] [2021-06-05 20:59:00,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:00,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:00,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:00,707 INFO L87 Difference]: Start difference. First operand 1910 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:00,758 INFO L93 Difference]: Finished difference Result 4239 states and 16236 transitions. [2021-06-05 20:59:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:00,766 INFO L225 Difference]: With dead ends: 4239 [2021-06-05 20:59:00,766 INFO L226 Difference]: Without dead ends: 3877 [2021-06-05 20:59:00,766 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2021-06-05 20:59:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 1866. [2021-06-05 20:59:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 4.073458445040214) internal successors, (7597), 1865 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 7597 transitions. [2021-06-05 20:59:00,815 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 7597 transitions. Word has length 25 [2021-06-05 20:59:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:00,815 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 7597 transitions. [2021-06-05 20:59:00,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 7597 transitions. [2021-06-05 20:59:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:00,818 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:00,818 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:00,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 20:59:00,818 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:00,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1529420059, now seen corresponding path program 171 times [2021-06-05 20:59:00,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:00,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131511239] [2021-06-05 20:59:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:00,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:00,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131511239] [2021-06-05 20:59:00,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131511239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:00,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:00,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:00,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530595618] [2021-06-05 20:59:00,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:00,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:00,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:00,897 INFO L87 Difference]: Start difference. First operand 1866 states and 7597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:00,949 INFO L93 Difference]: Finished difference Result 4117 states and 15792 transitions. [2021-06-05 20:59:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:00,957 INFO L225 Difference]: With dead ends: 4117 [2021-06-05 20:59:00,958 INFO L226 Difference]: Without dead ends: 3870 [2021-06-05 20:59:00,958 INFO L810 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 [2021-06-05 20:59:00,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-06-05 20:59:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 1894. [2021-06-05 20:59:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.0596936080295825) internal successors, (7685), 1893 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 7685 transitions. [2021-06-05 20:59:01,009 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 7685 transitions. Word has length 25 [2021-06-05 20:59:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:01,009 INFO L482 AbstractCegarLoop]: Abstraction has 1894 states and 7685 transitions. [2021-06-05 20:59:01,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 7685 transitions. [2021-06-05 20:59:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:01,012 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:01,012 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:01,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 20:59:01,012 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash -39508483, now seen corresponding path program 172 times [2021-06-05 20:59:01,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:01,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498619610] [2021-06-05 20:59:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:01,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:01,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498619610] [2021-06-05 20:59:01,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498619610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:01,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:01,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:01,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419781807] [2021-06-05 20:59:01,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:01,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:01,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:01,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:01,090 INFO L87 Difference]: Start difference. First operand 1894 states and 7685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:01,154 INFO L93 Difference]: Finished difference Result 4153 states and 15912 transitions. [2021-06-05 20:59:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:01,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:01,162 INFO L225 Difference]: With dead ends: 4153 [2021-06-05 20:59:01,162 INFO L226 Difference]: Without dead ends: 3842 [2021-06-05 20:59:01,163 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-06-05 20:59:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 1866. [2021-06-05 20:59:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 4.0659517426273455) internal successors, (7583), 1865 states have internal predecessors, (7583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 7583 transitions. [2021-06-05 20:59:01,212 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 7583 transitions. Word has length 25 [2021-06-05 20:59:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:01,212 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 7583 transitions. [2021-06-05 20:59:01,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 7583 transitions. [2021-06-05 20:59:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:01,214 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:01,214 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:01,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 20:59:01,214 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:01,215 INFO L82 PathProgramCache]: Analyzing trace with hash -677671969, now seen corresponding path program 173 times [2021-06-05 20:59:01,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:01,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300016731] [2021-06-05 20:59:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:01,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:01,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300016731] [2021-06-05 20:59:01,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300016731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:01,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:01,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:01,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632322833] [2021-06-05 20:59:01,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:01,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:01,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:01,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:01,286 INFO L87 Difference]: Start difference. First operand 1866 states and 7583 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:01,348 INFO L93 Difference]: Finished difference Result 4258 states and 16340 transitions. [2021-06-05 20:59:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:01,357 INFO L225 Difference]: With dead ends: 4258 [2021-06-05 20:59:01,357 INFO L226 Difference]: Without dead ends: 3975 [2021-06-05 20:59:01,357 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-06-05 20:59:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 1928. [2021-06-05 20:59:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 4.0477426050856256) internal successors, (7800), 1927 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7800 transitions. [2021-06-05 20:59:01,408 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7800 transitions. Word has length 25 [2021-06-05 20:59:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:01,408 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 7800 transitions. [2021-06-05 20:59:01,408 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) [2021-06-05 20:59:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7800 transitions. [2021-06-05 20:59:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:01,411 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:01,411 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:01,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 20:59:01,411 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:01,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1030811459, now seen corresponding path program 174 times [2021-06-05 20:59:01,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:01,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050842820] [2021-06-05 20:59:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:01,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:01,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050842820] [2021-06-05 20:59:01,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050842820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:01,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:01,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:01,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214950567] [2021-06-05 20:59:01,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:01,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:01,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:01,487 INFO L87 Difference]: Start difference. First operand 1928 states and 7800 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:01,539 INFO L93 Difference]: Finished difference Result 4293 states and 16413 transitions. [2021-06-05 20:59:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:01,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:01,548 INFO L225 Difference]: With dead ends: 4293 [2021-06-05 20:59:01,548 INFO L226 Difference]: Without dead ends: 3891 [2021-06-05 20:59:01,548 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2021-06-05 20:59:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 1844. [2021-06-05 20:59:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 4.0737927292457945) internal successors, (7508), 1843 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 7508 transitions. [2021-06-05 20:59:01,597 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 7508 transitions. Word has length 25 [2021-06-05 20:59:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:01,597 INFO L482 AbstractCegarLoop]: Abstraction has 1844 states and 7508 transitions. [2021-06-05 20:59:01,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 7508 transitions. [2021-06-05 20:59:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:01,599 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:01,599 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:01,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 20:59:01,599 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2023650115, now seen corresponding path program 175 times [2021-06-05 20:59:01,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:01,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876928124] [2021-06-05 20:59:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:01,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:01,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876928124] [2021-06-05 20:59:01,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876928124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:01,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:01,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:01,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153780143] [2021-06-05 20:59:01,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:01,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:01,679 INFO L87 Difference]: Start difference. First operand 1844 states and 7508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:01,727 INFO L93 Difference]: Finished difference Result 4088 states and 15663 transitions. [2021-06-05 20:59:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:01,735 INFO L225 Difference]: With dead ends: 4088 [2021-06-05 20:59:01,735 INFO L226 Difference]: Without dead ends: 3841 [2021-06-05 20:59:01,735 INFO L810 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 [2021-06-05 20:59:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-06-05 20:59:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 1908. [2021-06-05 20:59:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 4.065023597273204) internal successors, (7752), 1907 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 7752 transitions. [2021-06-05 20:59:01,785 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 7752 transitions. Word has length 25 [2021-06-05 20:59:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:01,785 INFO L482 AbstractCegarLoop]: Abstraction has 1908 states and 7752 transitions. [2021-06-05 20:59:01,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 7752 transitions. [2021-06-05 20:59:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:01,788 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:01,788 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:01,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 20:59:01,788 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:01,789 INFO L82 PathProgramCache]: Analyzing trace with hash 639370015, now seen corresponding path program 176 times [2021-06-05 20:59:01,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:01,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444706605] [2021-06-05 20:59:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:01,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:01,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444706605] [2021-06-05 20:59:01,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444706605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:01,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:01,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:01,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155599355] [2021-06-05 20:59:01,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:01,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:01,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:01,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:01,880 INFO L87 Difference]: Start difference. First operand 1908 states and 7752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:01,931 INFO L93 Difference]: Finished difference Result 4159 states and 15902 transitions. [2021-06-05 20:59:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:01,939 INFO L225 Difference]: With dead ends: 4159 [2021-06-05 20:59:01,939 INFO L226 Difference]: Without dead ends: 3797 [2021-06-05 20:59:01,939 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:01,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-06-05 20:59:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 1864. [2021-06-05 20:59:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 4.068706387546968) internal successors, (7580), 1863 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 7580 transitions. [2021-06-05 20:59:01,988 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 7580 transitions. Word has length 25 [2021-06-05 20:59:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:01,988 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 7580 transitions. [2021-06-05 20:59:01,988 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) [2021-06-05 20:59:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 7580 transitions. [2021-06-05 20:59:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:01,990 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:01,990 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:01,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 20:59:01,991 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash -10520293, now seen corresponding path program 177 times [2021-06-05 20:59:01,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:01,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545333623] [2021-06-05 20:59:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:02,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:02,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545333623] [2021-06-05 20:59:02,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545333623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:02,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:02,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:02,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227079942] [2021-06-05 20:59:02,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:02,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:02,065 INFO L87 Difference]: Start difference. First operand 1864 states and 7580 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:02,119 INFO L93 Difference]: Finished difference Result 3957 states and 15164 transitions. [2021-06-05 20:59:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:02,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:02,127 INFO L225 Difference]: With dead ends: 3957 [2021-06-05 20:59:02,127 INFO L226 Difference]: Without dead ends: 3710 [2021-06-05 20:59:02,127 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2021-06-05 20:59:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1888. [2021-06-05 20:59:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.0572337042925275) internal successors, (7656), 1887 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7656 transitions. [2021-06-05 20:59:02,176 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7656 transitions. Word has length 25 [2021-06-05 20:59:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:02,176 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7656 transitions. [2021-06-05 20:59:02,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7656 transitions. [2021-06-05 20:59:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:02,178 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:02,178 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:02,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 20:59:02,179 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1537436419, now seen corresponding path program 178 times [2021-06-05 20:59:02,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:02,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122132929] [2021-06-05 20:59:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:02,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:02,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122132929] [2021-06-05 20:59:02,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122132929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:02,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:02,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:02,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007269392] [2021-06-05 20:59:02,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:02,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:02,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:02,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:02,252 INFO L87 Difference]: Start difference. First operand 1888 states and 7656 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:02,312 INFO L93 Difference]: Finished difference Result 3781 states and 14587 transitions. [2021-06-05 20:59:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:02,319 INFO L225 Difference]: With dead ends: 3781 [2021-06-05 20:59:02,320 INFO L226 Difference]: Without dead ends: 3494 [2021-06-05 20:59:02,320 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-06-05 20:59:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 1864. [2021-06-05 20:59:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 4.062265163714439) internal successors, (7568), 1863 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 7568 transitions. [2021-06-05 20:59:02,367 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 7568 transitions. Word has length 25 [2021-06-05 20:59:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:02,367 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 7568 transitions. [2021-06-05 20:59:02,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 7568 transitions. [2021-06-05 20:59:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:02,369 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:02,370 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:02,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 20:59:02,370 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2119367391, now seen corresponding path program 179 times [2021-06-05 20:59:02,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:02,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455064834] [2021-06-05 20:59:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:02,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:02,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455064834] [2021-06-05 20:59:02,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455064834] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:02,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:02,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:02,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314394527] [2021-06-05 20:59:02,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:02,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:02,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:02,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:02,451 INFO L87 Difference]: Start difference. First operand 1864 states and 7568 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:02,511 INFO L93 Difference]: Finished difference Result 4128 states and 15815 transitions. [2021-06-05 20:59:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:02,511 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 [2021-06-05 20:59:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:02,519 INFO L225 Difference]: With dead ends: 4128 [2021-06-05 20:59:02,519 INFO L226 Difference]: Without dead ends: 3865 [2021-06-05 20:59:02,519 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-05 20:59:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 1916. [2021-06-05 20:59:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 4.048041775456919) internal successors, (7752), 1915 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7752 transitions. [2021-06-05 20:59:02,569 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 7752 transitions. Word has length 25 [2021-06-05 20:59:02,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:02,569 INFO L482 AbstractCegarLoop]: Abstraction has 1916 states and 7752 transitions. [2021-06-05 20:59:02,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 7752 transitions. [2021-06-05 20:59:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:02,572 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:02,572 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:02,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 20:59:02,572 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash 463843005, now seen corresponding path program 180 times [2021-06-05 20:59:02,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:02,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898770894] [2021-06-05 20:59:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:02,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:02,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898770894] [2021-06-05 20:59:02,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898770894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:02,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:02,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:02,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537361999] [2021-06-05 20:59:02,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:02,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:02,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:02,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:02,657 INFO L87 Difference]: Start difference. First operand 1916 states and 7752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:02,713 INFO L93 Difference]: Finished difference Result 4056 states and 15503 transitions. [2021-06-05 20:59:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:02,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:02,720 INFO L225 Difference]: With dead ends: 4056 [2021-06-05 20:59:02,721 INFO L226 Difference]: Without dead ends: 3666 [2021-06-05 20:59:02,721 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-06-05 20:59:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1844. [2021-06-05 20:59:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 4.0683667932718395) internal successors, (7498), 1843 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 7498 transitions. [2021-06-05 20:59:02,768 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 7498 transitions. Word has length 25 [2021-06-05 20:59:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:02,768 INFO L482 AbstractCegarLoop]: Abstraction has 1844 states and 7498 transitions. [2021-06-05 20:59:02,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 7498 transitions. [2021-06-05 20:59:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:02,771 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:02,771 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:02,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 20:59:02,771 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:02,771 INFO L82 PathProgramCache]: Analyzing trace with hash -881504037, now seen corresponding path program 181 times [2021-06-05 20:59:02,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:02,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072739488] [2021-06-05 20:59:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:02,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:02,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072739488] [2021-06-05 20:59:02,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072739488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:02,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:02,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:02,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147291267] [2021-06-05 20:59:02,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:02,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:02,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:02,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:02,844 INFO L87 Difference]: Start difference. First operand 1844 states and 7498 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:02,898 INFO L93 Difference]: Finished difference Result 3978 states and 15251 transitions. [2021-06-05 20:59:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:02,898 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 [2021-06-05 20:59:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:02,905 INFO L225 Difference]: With dead ends: 3978 [2021-06-05 20:59:02,906 INFO L226 Difference]: Without dead ends: 3731 [2021-06-05 20:59:02,906 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-06-05 20:59:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 1884. [2021-06-05 20:59:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 4.058417419012215) internal successors, (7642), 1883 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 7642 transitions. [2021-06-05 20:59:02,954 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 7642 transitions. Word has length 25 [2021-06-05 20:59:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:02,954 INFO L482 AbstractCegarLoop]: Abstraction has 1884 states and 7642 transitions. [2021-06-05 20:59:02,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 7642 transitions. [2021-06-05 20:59:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:02,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:02,957 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:02,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 20:59:02,957 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1844534717, now seen corresponding path program 182 times [2021-06-05 20:59:02,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:02,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559566594] [2021-06-05 20:59:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:03,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:03,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559566594] [2021-06-05 20:59:03,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559566594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:03,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:03,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:03,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726240005] [2021-06-05 20:59:03,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:03,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:03,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:03,029 INFO L87 Difference]: Start difference. First operand 1884 states and 7642 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:03,094 INFO L93 Difference]: Finished difference Result 4014 states and 15371 transitions. [2021-06-05 20:59:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:03,102 INFO L225 Difference]: With dead ends: 4014 [2021-06-05 20:59:03,102 INFO L226 Difference]: Without dead ends: 3703 [2021-06-05 20:59:03,102 INFO L810 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 [2021-06-05 20:59:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2021-06-05 20:59:03,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 1856. [2021-06-05 20:59:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 4.065768194070081) internal successors, (7542), 1855 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 7542 transitions. [2021-06-05 20:59:03,150 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 7542 transitions. Word has length 25 [2021-06-05 20:59:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:03,150 INFO L482 AbstractCegarLoop]: Abstraction has 1856 states and 7542 transitions. [2021-06-05 20:59:03,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 7542 transitions. [2021-06-05 20:59:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:03,153 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:03,153 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:03,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 20:59:03,153 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1088312003, now seen corresponding path program 183 times [2021-06-05 20:59:03,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:03,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567531390] [2021-06-05 20:59:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:03,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:03,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567531390] [2021-06-05 20:59:03,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567531390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:03,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:03,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:03,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097911888] [2021-06-05 20:59:03,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:03,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:03,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:03,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:03,220 INFO L87 Difference]: Start difference. First operand 1856 states and 7542 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:03,270 INFO L93 Difference]: Finished difference Result 3898 states and 14943 transitions. [2021-06-05 20:59:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:03,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:03,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:03,278 INFO L225 Difference]: With dead ends: 3898 [2021-06-05 20:59:03,278 INFO L226 Difference]: Without dead ends: 3651 [2021-06-05 20:59:03,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2021-06-05 20:59:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 1880. [2021-06-05 20:59:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 4.054284193720064) internal successors, (7618), 1879 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 7618 transitions. [2021-06-05 20:59:03,326 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 7618 transitions. Word has length 25 [2021-06-05 20:59:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:03,326 INFO L482 AbstractCegarLoop]: Abstraction has 1880 states and 7618 transitions. [2021-06-05 20:59:03,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 7618 transitions. [2021-06-05 20:59:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:03,328 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:03,328 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:03,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 20:59:03,329 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:03,329 INFO L82 PathProgramCache]: Analyzing trace with hash 613190845, now seen corresponding path program 184 times [2021-06-05 20:59:03,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:03,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194817521] [2021-06-05 20:59:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:03,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:03,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194817521] [2021-06-05 20:59:03,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194817521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:03,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:03,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:03,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830013262] [2021-06-05 20:59:03,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:03,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:03,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:03,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:03,409 INFO L87 Difference]: Start difference. First operand 1880 states and 7618 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:03,479 INFO L93 Difference]: Finished difference Result 3722 states and 14366 transitions. [2021-06-05 20:59:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:03,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:03,486 INFO L225 Difference]: With dead ends: 3722 [2021-06-05 20:59:03,486 INFO L226 Difference]: Without dead ends: 3435 [2021-06-05 20:59:03,486 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-06-05 20:59:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 1856. [2021-06-05 20:59:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 4.059299191374663) internal successors, (7530), 1855 states have internal predecessors, (7530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 7530 transitions. [2021-06-05 20:59:03,534 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 7530 transitions. Word has length 25 [2021-06-05 20:59:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:03,534 INFO L482 AbstractCegarLoop]: Abstraction has 1856 states and 7530 transitions. [2021-06-05 20:59:03,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 7530 transitions. [2021-06-05 20:59:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:03,537 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:03,537 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:03,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 20:59:03,537 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:03,537 INFO L82 PathProgramCache]: Analyzing trace with hash -938014433, now seen corresponding path program 185 times [2021-06-05 20:59:03,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:03,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350720943] [2021-06-05 20:59:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:03,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:03,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350720943] [2021-06-05 20:59:03,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350720943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:03,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:03,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:03,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677124683] [2021-06-05 20:59:03,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:03,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:03,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:03,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:03,602 INFO L87 Difference]: Start difference. First operand 1856 states and 7530 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:03,668 INFO L93 Difference]: Finished difference Result 3946 states and 15135 transitions. [2021-06-05 20:59:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:03,669 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 [2021-06-05 20:59:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:03,676 INFO L225 Difference]: With dead ends: 3946 [2021-06-05 20:59:03,676 INFO L226 Difference]: Without dead ends: 3663 [2021-06-05 20:59:03,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:03,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-06-05 20:59:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 1892. [2021-06-05 20:59:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.0454785827604445) internal successors, (7650), 1891 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7650 transitions. [2021-06-05 20:59:03,742 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7650 transitions. Word has length 25 [2021-06-05 20:59:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:03,742 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7650 transitions. [2021-06-05 20:59:03,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7650 transitions. [2021-06-05 20:59:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:03,744 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:03,744 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:03,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 20:59:03,744 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:03,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1964808317, now seen corresponding path program 186 times [2021-06-05 20:59:03,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:03,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568005497] [2021-06-05 20:59:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:03,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:03,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568005497] [2021-06-05 20:59:03,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568005497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:03,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:03,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:03,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614242736] [2021-06-05 20:59:03,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:03,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:03,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:03,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:03,808 INFO L87 Difference]: Start difference. First operand 1892 states and 7650 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:03,875 INFO L93 Difference]: Finished difference Result 3734 states and 14398 transitions. [2021-06-05 20:59:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:03,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:03,882 INFO L225 Difference]: With dead ends: 3734 [2021-06-05 20:59:03,882 INFO L226 Difference]: Without dead ends: 3423 [2021-06-05 20:59:03,883 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2021-06-05 20:59:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 1844. [2021-06-05 20:59:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 4.0651112316874665) internal successors, (7492), 1843 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 7492 transitions. [2021-06-05 20:59:03,928 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 7492 transitions. Word has length 25 [2021-06-05 20:59:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:03,928 INFO L482 AbstractCegarLoop]: Abstraction has 1844 states and 7492 transitions. [2021-06-05 20:59:03,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 7492 transitions. [2021-06-05 20:59:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:03,931 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:03,931 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:03,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 20:59:03,931 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash -32801151, now seen corresponding path program 187 times [2021-06-05 20:59:03,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:03,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99555561] [2021-06-05 20:59:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:03,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:03,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99555561] [2021-06-05 20:59:03,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99555561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:03,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:03,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:03,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463641219] [2021-06-05 20:59:03,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:03,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:03,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:03,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:03,995 INFO L87 Difference]: Start difference. First operand 1844 states and 7492 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:04,060 INFO L93 Difference]: Finished difference Result 4213 states and 16222 transitions. [2021-06-05 20:59:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:04,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:04,069 INFO L225 Difference]: With dead ends: 4213 [2021-06-05 20:59:04,069 INFO L226 Difference]: Without dead ends: 3930 [2021-06-05 20:59:04,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-06-05 20:59:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 1906. [2021-06-05 20:59:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 4.060367454068241) internal successors, (7735), 1905 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 7735 transitions. [2021-06-05 20:59:04,119 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 7735 transitions. Word has length 25 [2021-06-05 20:59:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:04,119 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 7735 transitions. [2021-06-05 20:59:04,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 7735 transitions. [2021-06-05 20:59:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:04,121 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:04,122 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:04,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 20:59:04,122 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:04,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:04,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1424945697, now seen corresponding path program 188 times [2021-06-05 20:59:04,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:04,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30329211] [2021-06-05 20:59:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:04,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:04,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30329211] [2021-06-05 20:59:04,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30329211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:04,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:04,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:04,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139842647] [2021-06-05 20:59:04,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:04,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:04,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:04,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:04,186 INFO L87 Difference]: Start difference. First operand 1906 states and 7735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:04,245 INFO L93 Difference]: Finished difference Result 4193 states and 16110 transitions. [2021-06-05 20:59:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:04,246 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 [2021-06-05 20:59:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:04,254 INFO L225 Difference]: With dead ends: 4193 [2021-06-05 20:59:04,254 INFO L226 Difference]: Without dead ends: 3894 [2021-06-05 20:59:04,254 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2021-06-05 20:59:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 1870. [2021-06-05 20:59:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 4.06474050294275) internal successors, (7597), 1869 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 7597 transitions. [2021-06-05 20:59:04,304 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 7597 transitions. Word has length 25 [2021-06-05 20:59:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:04,304 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 7597 transitions. [2021-06-05 20:59:04,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 7597 transitions. [2021-06-05 20:59:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:04,306 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:04,307 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:04,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 20:59:04,307 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:04,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1853836577, now seen corresponding path program 189 times [2021-06-05 20:59:04,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:04,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026566072] [2021-06-05 20:59:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:04,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:04,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026566072] [2021-06-05 20:59:04,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026566072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:04,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:04,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:04,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279441549] [2021-06-05 20:59:04,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:04,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:04,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:04,383 INFO L87 Difference]: Start difference. First operand 1870 states and 7597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:04,450 INFO L93 Difference]: Finished difference Result 4232 states and 16243 transitions. [2021-06-05 20:59:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:04,458 INFO L225 Difference]: With dead ends: 4232 [2021-06-05 20:59:04,458 INFO L226 Difference]: Without dead ends: 3949 [2021-06-05 20:59:04,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2021-06-05 20:59:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 1932. [2021-06-05 20:59:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 4.046607975142413) internal successors, (7814), 1931 states have internal predecessors, (7814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7814 transitions. [2021-06-05 20:59:04,509 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7814 transitions. Word has length 25 [2021-06-05 20:59:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:04,509 INFO L482 AbstractCegarLoop]: Abstraction has 1932 states and 7814 transitions. [2021-06-05 20:59:04,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7814 transitions. [2021-06-05 20:59:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:04,512 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:04,512 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:04,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 20:59:04,512 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:04,512 INFO L82 PathProgramCache]: Analyzing trace with hash -485076129, now seen corresponding path program 190 times [2021-06-05 20:59:04,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:04,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547633894] [2021-06-05 20:59:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:04,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:04,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547633894] [2021-06-05 20:59:04,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547633894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:04,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:04,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:04,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454733932] [2021-06-05 20:59:04,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:04,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:04,579 INFO L87 Difference]: Start difference. First operand 1932 states and 7814 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:04,628 INFO L93 Difference]: Finished difference Result 4267 states and 16316 transitions. [2021-06-05 20:59:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:04,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:04,637 INFO L225 Difference]: With dead ends: 4267 [2021-06-05 20:59:04,637 INFO L226 Difference]: Without dead ends: 3887 [2021-06-05 20:59:04,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:04,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2021-06-05 20:59:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 1870. [2021-06-05 20:59:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 4.050829320492242) internal successors, (7571), 1869 states have internal predecessors, (7571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 7571 transitions. [2021-06-05 20:59:04,686 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 7571 transitions. Word has length 25 [2021-06-05 20:59:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:04,686 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 7571 transitions. [2021-06-05 20:59:04,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 7571 transitions. [2021-06-05 20:59:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:04,689 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:04,689 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:04,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 20:59:04,689 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1489579203, now seen corresponding path program 191 times [2021-06-05 20:59:04,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:04,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575580880] [2021-06-05 20:59:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:04,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:04,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575580880] [2021-06-05 20:59:04,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575580880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:04,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:04,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:04,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757061832] [2021-06-05 20:59:04,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:04,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:04,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:04,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:04,764 INFO L87 Difference]: Start difference. First operand 1870 states and 7571 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:04,827 INFO L93 Difference]: Finished difference Result 4182 states and 16022 transitions. [2021-06-05 20:59:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:04,827 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 [2021-06-05 20:59:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:04,835 INFO L225 Difference]: With dead ends: 4182 [2021-06-05 20:59:04,835 INFO L226 Difference]: Without dead ends: 3919 [2021-06-05 20:59:04,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:04,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2021-06-05 20:59:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 1922. [2021-06-05 20:59:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 4.036959916710047) internal successors, (7755), 1921 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 7755 transitions. [2021-06-05 20:59:04,885 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 7755 transitions. Word has length 25 [2021-06-05 20:59:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:04,885 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 7755 transitions. [2021-06-05 20:59:04,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 7755 transitions. [2021-06-05 20:59:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:04,888 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:04,888 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:04,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 20:59:04,888 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1271227617, now seen corresponding path program 192 times [2021-06-05 20:59:04,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:04,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796559290] [2021-06-05 20:59:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:04,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:04,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796559290] [2021-06-05 20:59:04,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796559290] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:04,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:04,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:04,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293863878] [2021-06-05 20:59:04,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:04,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:04,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:04,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:04,974 INFO L87 Difference]: Start difference. First operand 1922 states and 7755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:05,031 INFO L93 Difference]: Finished difference Result 4110 states and 15710 transitions. [2021-06-05 20:59:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:05,031 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 [2021-06-05 20:59:05,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:05,038 INFO L225 Difference]: With dead ends: 4110 [2021-06-05 20:59:05,039 INFO L226 Difference]: Without dead ends: 3704 [2021-06-05 20:59:05,039 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-06-05 20:59:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 1834. [2021-06-05 20:59:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.070921985815603) internal successors, (7462), 1833 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7462 transitions. [2021-06-05 20:59:05,087 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7462 transitions. Word has length 25 [2021-06-05 20:59:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:05,087 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7462 transitions. [2021-06-05 20:59:05,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7462 transitions. [2021-06-05 20:59:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:05,089 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:05,089 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:05,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 20:59:05,089 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash -834701063, now seen corresponding path program 193 times [2021-06-05 20:59:05,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:05,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914305683] [2021-06-05 20:59:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:05,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:05,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914305683] [2021-06-05 20:59:05,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914305683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:05,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:05,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:05,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750428631] [2021-06-05 20:59:05,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:05,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:05,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:05,168 INFO L87 Difference]: Start difference. First operand 1834 states and 7462 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:05,215 INFO L93 Difference]: Finished difference Result 3945 states and 15138 transitions. [2021-06-05 20:59:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:05,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:05,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:05,223 INFO L225 Difference]: With dead ends: 3945 [2021-06-05 20:59:05,223 INFO L226 Difference]: Without dead ends: 3698 [2021-06-05 20:59:05,223 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:05,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-05 20:59:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 1882. [2021-06-05 20:59:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.0648591174906965) internal successors, (7646), 1881 states have internal predecessors, (7646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7646 transitions. [2021-06-05 20:59:05,272 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7646 transitions. Word has length 25 [2021-06-05 20:59:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:05,272 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7646 transitions. [2021-06-05 20:59:05,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7646 transitions. [2021-06-05 20:59:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:05,275 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:05,275 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:05,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 20:59:05,275 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1870331483, now seen corresponding path program 194 times [2021-06-05 20:59:05,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:05,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440143261] [2021-06-05 20:59:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:05,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:05,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440143261] [2021-06-05 20:59:05,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440143261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:05,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:05,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:05,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380187725] [2021-06-05 20:59:05,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:05,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:05,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:05,352 INFO L87 Difference]: Start difference. First operand 1882 states and 7646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:05,412 INFO L93 Difference]: Finished difference Result 3983 states and 15263 transitions. [2021-06-05 20:59:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:05,412 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 [2021-06-05 20:59:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:05,420 INFO L225 Difference]: With dead ends: 3983 [2021-06-05 20:59:05,420 INFO L226 Difference]: Without dead ends: 3670 [2021-06-05 20:59:05,420 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-05 20:59:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 1854. [2021-06-05 20:59:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 4.071235833783055) internal successors, (7544), 1853 states have internal predecessors, (7544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 7544 transitions. [2021-06-05 20:59:05,468 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 7544 transitions. Word has length 25 [2021-06-05 20:59:05,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:05,469 INFO L482 AbstractCegarLoop]: Abstraction has 1854 states and 7544 transitions. [2021-06-05 20:59:05,469 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) [2021-06-05 20:59:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 7544 transitions. [2021-06-05 20:59:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:05,471 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:05,471 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:05,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 20:59:05,471 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:05,471 INFO L82 PathProgramCache]: Analyzing trace with hash 246361563, now seen corresponding path program 195 times [2021-06-05 20:59:05,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:05,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12262683] [2021-06-05 20:59:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:05,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:05,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12262683] [2021-06-05 20:59:05,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12262683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:05,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:05,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:05,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211471631] [2021-06-05 20:59:05,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:05,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:05,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:05,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:05,551 INFO L87 Difference]: Start difference. First operand 1854 states and 7544 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:05,610 INFO L93 Difference]: Finished difference Result 3943 states and 15119 transitions. [2021-06-05 20:59:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:05,618 INFO L225 Difference]: With dead ends: 3943 [2021-06-05 20:59:05,618 INFO L226 Difference]: Without dead ends: 3696 [2021-06-05 20:59:05,618 INFO L810 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 [2021-06-05 20:59:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-06-05 20:59:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1882. [2021-06-05 20:59:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.057416267942584) internal successors, (7632), 1881 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7632 transitions. [2021-06-05 20:59:05,666 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7632 transitions. Word has length 25 [2021-06-05 20:59:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:05,667 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7632 transitions. [2021-06-05 20:59:05,667 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) [2021-06-05 20:59:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7632 transitions. [2021-06-05 20:59:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:05,669 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:05,669 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:05,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 20:59:05,669 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1254659547, now seen corresponding path program 196 times [2021-06-05 20:59:05,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:05,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766468709] [2021-06-05 20:59:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:05,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:05,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766468709] [2021-06-05 20:59:05,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766468709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:05,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:05,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:05,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114652966] [2021-06-05 20:59:05,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:05,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:05,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:05,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:05,743 INFO L87 Difference]: Start difference. First operand 1882 states and 7632 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:05,802 INFO L93 Difference]: Finished difference Result 3979 states and 15239 transitions. [2021-06-05 20:59:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:05,810 INFO L225 Difference]: With dead ends: 3979 [2021-06-05 20:59:05,810 INFO L226 Difference]: Without dead ends: 3668 [2021-06-05 20:59:05,810 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2021-06-05 20:59:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 1854. [2021-06-05 20:59:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 4.063680518078791) internal successors, (7530), 1853 states have internal predecessors, (7530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 7530 transitions. [2021-06-05 20:59:05,858 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 7530 transitions. Word has length 25 [2021-06-05 20:59:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:05,858 INFO L482 AbstractCegarLoop]: Abstraction has 1854 states and 7530 transitions. [2021-06-05 20:59:05,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 7530 transitions. [2021-06-05 20:59:05,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:05,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:05,861 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:05,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 20:59:05,861 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:05,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1663523517, now seen corresponding path program 197 times [2021-06-05 20:59:05,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:05,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953330507] [2021-06-05 20:59:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:05,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:05,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953330507] [2021-06-05 20:59:05,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953330507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:05,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:05,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:05,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124642545] [2021-06-05 20:59:05,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:05,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:05,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:05,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:05,932 INFO L87 Difference]: Start difference. First operand 1854 states and 7530 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:05,989 INFO L93 Difference]: Finished difference Result 4037 states and 15494 transitions. [2021-06-05 20:59:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:05,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:05,997 INFO L225 Difference]: With dead ends: 4037 [2021-06-05 20:59:05,997 INFO L226 Difference]: Without dead ends: 3752 [2021-06-05 20:59:05,997 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-06-05 20:59:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 1900. [2021-06-05 20:59:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.045813586097946) internal successors, (7683), 1899 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7683 transitions. [2021-06-05 20:59:06,046 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7683 transitions. Word has length 25 [2021-06-05 20:59:06,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:06,047 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7683 transitions. [2021-06-05 20:59:06,047 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) [2021-06-05 20:59:06,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7683 transitions. [2021-06-05 20:59:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:06,049 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:06,049 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:06,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 20:59:06,049 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:06,050 INFO L82 PathProgramCache]: Analyzing trace with hash -379813477, now seen corresponding path program 198 times [2021-06-05 20:59:06,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:06,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420759739] [2021-06-05 20:59:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:06,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:06,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420759739] [2021-06-05 20:59:06,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420759739] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:06,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:06,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:06,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026904632] [2021-06-05 20:59:06,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:06,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:06,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:06,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:06,123 INFO L87 Difference]: Start difference. First operand 1900 states and 7683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:06,182 INFO L93 Difference]: Finished difference Result 4035 states and 15443 transitions. [2021-06-05 20:59:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:06,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:06,190 INFO L225 Difference]: With dead ends: 4035 [2021-06-05 20:59:06,190 INFO L226 Difference]: Without dead ends: 3692 [2021-06-05 20:59:06,190 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-06-05 20:59:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 1840. [2021-06-05 20:59:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 4.071234366503535) internal successors, (7487), 1839 states have internal predecessors, (7487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 7487 transitions. [2021-06-05 20:59:06,239 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 7487 transitions. Word has length 25 [2021-06-05 20:59:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:06,239 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 7487 transitions. [2021-06-05 20:59:06,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 7487 transitions. [2021-06-05 20:59:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:06,242 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:06,242 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:06,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 20:59:06,242 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:06,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2008660773, now seen corresponding path program 199 times [2021-06-05 20:59:06,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:06,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225782529] [2021-06-05 20:59:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:06,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:06,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225782529] [2021-06-05 20:59:06,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225782529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:06,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:06,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:06,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356834459] [2021-06-05 20:59:06,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:06,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:06,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:06,322 INFO L87 Difference]: Start difference. First operand 1840 states and 7487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:06,369 INFO L93 Difference]: Finished difference Result 3881 states and 14872 transitions. [2021-06-05 20:59:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:06,369 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 [2021-06-05 20:59:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:06,377 INFO L225 Difference]: With dead ends: 3881 [2021-06-05 20:59:06,377 INFO L226 Difference]: Without dead ends: 3634 [2021-06-05 20:59:06,377 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:06,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2021-06-05 20:59:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 1880. [2021-06-05 20:59:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 4.061202767429484) internal successors, (7631), 1879 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 7631 transitions. [2021-06-05 20:59:06,426 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 7631 transitions. Word has length 25 [2021-06-05 20:59:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:06,426 INFO L482 AbstractCegarLoop]: Abstraction has 1880 states and 7631 transitions. [2021-06-05 20:59:06,426 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) [2021-06-05 20:59:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 7631 transitions. [2021-06-05 20:59:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:06,428 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:06,429 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:06,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 20:59:06,429 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash 696371773, now seen corresponding path program 200 times [2021-06-05 20:59:06,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:06,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599566789] [2021-06-05 20:59:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:06,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:06,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599566789] [2021-06-05 20:59:06,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599566789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:06,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:06,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:06,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539389290] [2021-06-05 20:59:06,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:06,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:06,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:06,508 INFO L87 Difference]: Start difference. First operand 1880 states and 7631 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:06,566 INFO L93 Difference]: Finished difference Result 3919 states and 14997 transitions. [2021-06-05 20:59:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:06,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:06,573 INFO L225 Difference]: With dead ends: 3919 [2021-06-05 20:59:06,573 INFO L226 Difference]: Without dead ends: 3606 [2021-06-05 20:59:06,574 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-06-05 20:59:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 1852. [2021-06-05 20:59:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.068611561318207) internal successors, (7531), 1851 states have internal predecessors, (7531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7531 transitions. [2021-06-05 20:59:06,622 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7531 transitions. Word has length 25 [2021-06-05 20:59:06,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:06,622 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7531 transitions. [2021-06-05 20:59:06,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7531 transitions. [2021-06-05 20:59:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:06,625 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:06,625 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:06,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 20:59:06,625 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1959093029, now seen corresponding path program 201 times [2021-06-05 20:59:06,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:06,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538717920] [2021-06-05 20:59:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:06,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:06,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538717920] [2021-06-05 20:59:06,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538717920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:06,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:06,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:06,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952731655] [2021-06-05 20:59:06,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:06,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:06,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:06,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:06,701 INFO L87 Difference]: Start difference. First operand 1852 states and 7531 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:06,750 INFO L93 Difference]: Finished difference Result 3799 states and 14559 transitions. [2021-06-05 20:59:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:06,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:06,758 INFO L225 Difference]: With dead ends: 3799 [2021-06-05 20:59:06,758 INFO L226 Difference]: Without dead ends: 3552 [2021-06-05 20:59:06,758 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2021-06-05 20:59:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 1876. [2021-06-05 20:59:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 4.057066666666667) internal successors, (7607), 1875 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 7607 transitions. [2021-06-05 20:59:06,808 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 7607 transitions. Word has length 25 [2021-06-05 20:59:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:06,808 INFO L482 AbstractCegarLoop]: Abstraction has 1876 states and 7607 transitions. [2021-06-05 20:59:06,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 7607 transitions. [2021-06-05 20:59:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:06,810 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:06,810 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:06,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 20:59:06,811 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:06,811 INFO L82 PathProgramCache]: Analyzing trace with hash 393602267, now seen corresponding path program 202 times [2021-06-05 20:59:06,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:06,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708478411] [2021-06-05 20:59:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:06,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:06,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708478411] [2021-06-05 20:59:06,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708478411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:06,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:06,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:06,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523590636] [2021-06-05 20:59:06,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:06,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:06,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:06,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:06,885 INFO L87 Difference]: Start difference. First operand 1876 states and 7607 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:06,944 INFO L93 Difference]: Finished difference Result 3623 states and 13982 transitions. [2021-06-05 20:59:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:06,951 INFO L225 Difference]: With dead ends: 3623 [2021-06-05 20:59:06,951 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 20:59:06,951 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 20:59:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 1852. [2021-06-05 20:59:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.062128579146408) internal successors, (7519), 1851 states have internal predecessors, (7519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7519 transitions. [2021-06-05 20:59:06,997 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7519 transitions. Word has length 25 [2021-06-05 20:59:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:06,997 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7519 transitions. [2021-06-05 20:59:06,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7519 transitions. [2021-06-05 20:59:07,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:07,000 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:07,000 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:07,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 20:59:07,000 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:07,000 INFO L82 PathProgramCache]: Analyzing trace with hash -541931075, now seen corresponding path program 203 times [2021-06-05 20:59:07,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:07,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344813442] [2021-06-05 20:59:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:07,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:07,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344813442] [2021-06-05 20:59:07,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344813442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:07,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:07,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:07,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903697641] [2021-06-05 20:59:07,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:07,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:07,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:07,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:07,081 INFO L87 Difference]: Start difference. First operand 1852 states and 7519 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:07,144 INFO L93 Difference]: Finished difference Result 3849 states and 14756 transitions. [2021-06-05 20:59:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:07,152 INFO L225 Difference]: With dead ends: 3849 [2021-06-05 20:59:07,152 INFO L226 Difference]: Without dead ends: 3564 [2021-06-05 20:59:07,152 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-06-05 20:59:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 1888. [2021-06-05 20:59:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.048224695283519) internal successors, (7639), 1887 states have internal predecessors, (7639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7639 transitions. [2021-06-05 20:59:07,200 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7639 transitions. Word has length 25 [2021-06-05 20:59:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:07,200 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7639 transitions. [2021-06-05 20:59:07,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7639 transitions. [2021-06-05 20:59:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:07,202 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:07,202 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:07,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 20:59:07,202 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1282883173, now seen corresponding path program 204 times [2021-06-05 20:59:07,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:07,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706322885] [2021-06-05 20:59:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:07,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:07,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706322885] [2021-06-05 20:59:07,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706322885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:07,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:07,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:07,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558422182] [2021-06-05 20:59:07,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:07,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:07,286 INFO L87 Difference]: Start difference. First operand 1888 states and 7639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:07,347 INFO L93 Difference]: Finished difference Result 3635 states and 14014 transitions. [2021-06-05 20:59:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:07,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:07,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:07,354 INFO L225 Difference]: With dead ends: 3635 [2021-06-05 20:59:07,355 INFO L226 Difference]: Without dead ends: 3324 [2021-06-05 20:59:07,355 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2021-06-05 20:59:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 1840. [2021-06-05 20:59:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 4.0679717237629145) internal successors, (7481), 1839 states have internal predecessors, (7481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 7481 transitions. [2021-06-05 20:59:07,400 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 7481 transitions. Word has length 25 [2021-06-05 20:59:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:07,401 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 7481 transitions. [2021-06-05 20:59:07,401 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) [2021-06-05 20:59:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 7481 transitions. [2021-06-05 20:59:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:07,403 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:07,403 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:07,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 20:59:07,403 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:07,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1620655811, now seen corresponding path program 205 times [2021-06-05 20:59:07,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:07,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894490286] [2021-06-05 20:59:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:07,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:07,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894490286] [2021-06-05 20:59:07,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894490286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:07,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:07,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:07,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412837575] [2021-06-05 20:59:07,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:07,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:07,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:07,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:07,498 INFO L87 Difference]: Start difference. First operand 1840 states and 7481 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:07,548 INFO L93 Difference]: Finished difference Result 3877 states and 14856 transitions. [2021-06-05 20:59:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:07,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:07,556 INFO L225 Difference]: With dead ends: 3877 [2021-06-05 20:59:07,556 INFO L226 Difference]: Without dead ends: 3630 [2021-06-05 20:59:07,556 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2021-06-05 20:59:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 1880. [2021-06-05 20:59:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 4.058009579563597) internal successors, (7625), 1879 states have internal predecessors, (7625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 7625 transitions. [2021-06-05 20:59:07,606 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 7625 transitions. Word has length 25 [2021-06-05 20:59:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:07,606 INFO L482 AbstractCegarLoop]: Abstraction has 1880 states and 7625 transitions. [2021-06-05 20:59:07,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 7625 transitions. [2021-06-05 20:59:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:07,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:07,609 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:07,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 20:59:07,609 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:07,610 INFO L82 PathProgramCache]: Analyzing trace with hash -612357827, now seen corresponding path program 206 times [2021-06-05 20:59:07,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:07,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838435943] [2021-06-05 20:59:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:07,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:07,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838435943] [2021-06-05 20:59:07,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838435943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:07,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:07,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:07,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93819445] [2021-06-05 20:59:07,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:07,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:07,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:07,683 INFO L87 Difference]: Start difference. First operand 1880 states and 7625 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:07,741 INFO L93 Difference]: Finished difference Result 3913 states and 14976 transitions. [2021-06-05 20:59:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:07,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:07,749 INFO L225 Difference]: With dead ends: 3913 [2021-06-05 20:59:07,749 INFO L226 Difference]: Without dead ends: 3602 [2021-06-05 20:59:07,749 INFO L810 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 [2021-06-05 20:59:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-06-05 20:59:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 1852. [2021-06-05 20:59:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.065370070232307) internal successors, (7525), 1851 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7525 transitions. [2021-06-05 20:59:07,796 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7525 transitions. Word has length 25 [2021-06-05 20:59:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:07,796 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7525 transitions. [2021-06-05 20:59:07,796 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) [2021-06-05 20:59:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7525 transitions. [2021-06-05 20:59:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:07,799 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:07,799 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:07,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 20:59:07,799 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:07,799 INFO L82 PathProgramCache]: Analyzing trace with hash 558231835, now seen corresponding path program 207 times [2021-06-05 20:59:07,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:07,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948200700] [2021-06-05 20:59:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:07,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:07,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948200700] [2021-06-05 20:59:07,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948200700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:07,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:07,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:07,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115032148] [2021-06-05 20:59:07,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:07,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:07,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:07,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:07,865 INFO L87 Difference]: Start difference. First operand 1852 states and 7525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:07,912 INFO L93 Difference]: Finished difference Result 3797 states and 14548 transitions. [2021-06-05 20:59:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:07,920 INFO L225 Difference]: With dead ends: 3797 [2021-06-05 20:59:07,920 INFO L226 Difference]: Without dead ends: 3550 [2021-06-05 20:59:07,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2021-06-05 20:59:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 1876. [2021-06-05 20:59:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 4.053866666666667) internal successors, (7601), 1875 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 7601 transitions. [2021-06-05 20:59:07,967 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 7601 transitions. Word has length 25 [2021-06-05 20:59:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:07,967 INFO L482 AbstractCegarLoop]: Abstraction has 1876 states and 7601 transitions. [2021-06-05 20:59:07,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 7601 transitions. [2021-06-05 20:59:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:07,970 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:07,970 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:07,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 20:59:07,970 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:07,970 INFO L82 PathProgramCache]: Analyzing trace with hash -87299779, now seen corresponding path program 208 times [2021-06-05 20:59:07,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:07,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872781309] [2021-06-05 20:59:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:08,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:08,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872781309] [2021-06-05 20:59:08,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872781309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:08,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:08,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:08,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991378497] [2021-06-05 20:59:08,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:08,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:08,036 INFO L87 Difference]: Start difference. First operand 1876 states and 7601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:08,099 INFO L93 Difference]: Finished difference Result 3621 states and 13971 transitions. [2021-06-05 20:59:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:08,106 INFO L225 Difference]: With dead ends: 3621 [2021-06-05 20:59:08,106 INFO L226 Difference]: Without dead ends: 3334 [2021-06-05 20:59:08,106 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-06-05 20:59:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 1852. [2021-06-05 20:59:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.058887088060508) internal successors, (7513), 1851 states have internal predecessors, (7513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7513 transitions. [2021-06-05 20:59:08,152 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7513 transitions. Word has length 25 [2021-06-05 20:59:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:08,152 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7513 transitions. [2021-06-05 20:59:08,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7513 transitions. [2021-06-05 20:59:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:08,155 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:08,155 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:08,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 20:59:08,155 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:08,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1175023933, now seen corresponding path program 209 times [2021-06-05 20:59:08,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:08,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107002476] [2021-06-05 20:59:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:08,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:08,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107002476] [2021-06-05 20:59:08,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107002476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:08,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:08,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:08,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357336234] [2021-06-05 20:59:08,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:08,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:08,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:08,220 INFO L87 Difference]: Start difference. First operand 1852 states and 7513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:08,278 INFO L93 Difference]: Finished difference Result 3845 states and 14740 transitions. [2021-06-05 20:59:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:08,285 INFO L225 Difference]: With dead ends: 3845 [2021-06-05 20:59:08,285 INFO L226 Difference]: Without dead ends: 3562 [2021-06-05 20:59:08,285 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-06-05 20:59:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 1888. [2021-06-05 20:59:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.045045045045045) internal successors, (7633), 1887 states have internal predecessors, (7633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7633 transitions. [2021-06-05 20:59:08,333 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7633 transitions. Word has length 25 [2021-06-05 20:59:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:08,333 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7633 transitions. [2021-06-05 20:59:08,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7633 transitions. [2021-06-05 20:59:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:08,335 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:08,335 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:08,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 20:59:08,335 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:08,336 INFO L82 PathProgramCache]: Analyzing trace with hash -217120613, now seen corresponding path program 210 times [2021-06-05 20:59:08,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:08,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440838616] [2021-06-05 20:59:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:08,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:08,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440838616] [2021-06-05 20:59:08,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440838616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:08,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:08,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:08,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212112020] [2021-06-05 20:59:08,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:08,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:08,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:08,400 INFO L87 Difference]: Start difference. First operand 1888 states and 7633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:08,459 INFO L93 Difference]: Finished difference Result 3633 states and 14003 transitions. [2021-06-05 20:59:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:08,466 INFO L225 Difference]: With dead ends: 3633 [2021-06-05 20:59:08,467 INFO L226 Difference]: Without dead ends: 3322 [2021-06-05 20:59:08,467 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-06-05 20:59:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 1840. [2021-06-05 20:59:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 4.064709081022294) internal successors, (7475), 1839 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 7475 transitions. [2021-06-05 20:59:08,512 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 7475 transitions. Word has length 25 [2021-06-05 20:59:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:08,512 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 7475 transitions. [2021-06-05 20:59:08,512 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) [2021-06-05 20:59:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 7475 transitions. [2021-06-05 20:59:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:08,515 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:08,515 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:08,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 20:59:08,515 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:08,515 INFO L82 PathProgramCache]: Analyzing trace with hash -896551521, now seen corresponding path program 211 times [2021-06-05 20:59:08,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:08,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421309184] [2021-06-05 20:59:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:08,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:08,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421309184] [2021-06-05 20:59:08,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421309184] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:08,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:08,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:08,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75210015] [2021-06-05 20:59:08,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:08,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:08,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:08,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:08,581 INFO L87 Difference]: Start difference. First operand 1840 states and 7475 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:08,641 INFO L93 Difference]: Finished difference Result 4027 states and 15479 transitions. [2021-06-05 20:59:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:08,649 INFO L225 Difference]: With dead ends: 4027 [2021-06-05 20:59:08,649 INFO L226 Difference]: Without dead ends: 3742 [2021-06-05 20:59:08,650 INFO L810 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 [2021-06-05 20:59:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-06-05 20:59:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 1904. [2021-06-05 20:59:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 4.054125065685759) internal successors, (7715), 1903 states have internal predecessors, (7715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 7715 transitions. [2021-06-05 20:59:08,699 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 7715 transitions. Word has length 25 [2021-06-05 20:59:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:08,699 INFO L482 AbstractCegarLoop]: Abstraction has 1904 states and 7715 transitions. [2021-06-05 20:59:08,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 7715 transitions. [2021-06-05 20:59:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:08,701 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:08,701 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:08,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 20:59:08,702 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1355078781, now seen corresponding path program 212 times [2021-06-05 20:59:08,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:08,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079421907] [2021-06-05 20:59:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:08,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:08,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079421907] [2021-06-05 20:59:08,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079421907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:08,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:08,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:08,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712767747] [2021-06-05 20:59:08,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:08,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:08,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:08,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:08,766 INFO L87 Difference]: Start difference. First operand 1904 states and 7715 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:08,823 INFO L93 Difference]: Finished difference Result 4025 states and 15428 transitions. [2021-06-05 20:59:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:08,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:08,831 INFO L225 Difference]: With dead ends: 4025 [2021-06-05 20:59:08,831 INFO L226 Difference]: Without dead ends: 3696 [2021-06-05 20:59:08,831 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-06-05 20:59:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1858. [2021-06-05 20:59:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 4.06246634356489) internal successors, (7544), 1857 states have internal predecessors, (7544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7544 transitions. [2021-06-05 20:59:08,879 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7544 transitions. Word has length 25 [2021-06-05 20:59:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:08,879 INFO L482 AbstractCegarLoop]: Abstraction has 1858 states and 7544 transitions. [2021-06-05 20:59:08,879 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) [2021-06-05 20:59:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7544 transitions. [2021-06-05 20:59:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:08,881 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:08,882 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:08,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 20:59:08,882 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1282336125, now seen corresponding path program 213 times [2021-06-05 20:59:08,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:08,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79213642] [2021-06-05 20:59:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:08,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:08,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79213642] [2021-06-05 20:59:08,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79213642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:08,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:08,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:08,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605939689] [2021-06-05 20:59:08,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:08,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:08,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:08,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:08,959 INFO L87 Difference]: Start difference. First operand 1858 states and 7544 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:09,017 INFO L93 Difference]: Finished difference Result 3903 states and 14985 transitions. [2021-06-05 20:59:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:09,025 INFO L225 Difference]: With dead ends: 3903 [2021-06-05 20:59:09,025 INFO L226 Difference]: Without dead ends: 3618 [2021-06-05 20:59:09,025 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2021-06-05 20:59:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 1894. [2021-06-05 20:59:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.048600105652404) internal successors, (7664), 1893 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 7664 transitions. [2021-06-05 20:59:09,073 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 7664 transitions. Word has length 25 [2021-06-05 20:59:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:09,073 INFO L482 AbstractCegarLoop]: Abstraction has 1894 states and 7664 transitions. [2021-06-05 20:59:09,073 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) [2021-06-05 20:59:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 7664 transitions. [2021-06-05 20:59:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:09,075 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:09,075 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:09,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 20:59:09,075 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:09,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1838124413, now seen corresponding path program 214 times [2021-06-05 20:59:09,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:09,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038864260] [2021-06-05 20:59:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:09,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:09,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038864260] [2021-06-05 20:59:09,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038864260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:09,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:09,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:09,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861054239] [2021-06-05 20:59:09,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:09,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:09,149 INFO L87 Difference]: Start difference. First operand 1894 states and 7664 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:09,213 INFO L93 Difference]: Finished difference Result 3689 states and 14243 transitions. [2021-06-05 20:59:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:09,220 INFO L225 Difference]: With dead ends: 3689 [2021-06-05 20:59:09,220 INFO L226 Difference]: Without dead ends: 3390 [2021-06-05 20:59:09,221 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2021-06-05 20:59:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 1858. [2021-06-05 20:59:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 4.052773290253096) internal successors, (7526), 1857 states have internal predecessors, (7526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7526 transitions. [2021-06-05 20:59:09,267 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7526 transitions. Word has length 25 [2021-06-05 20:59:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:09,267 INFO L482 AbstractCegarLoop]: Abstraction has 1858 states and 7526 transitions. [2021-06-05 20:59:09,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7526 transitions. [2021-06-05 20:59:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:09,269 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:09,269 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:09,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 20:59:09,269 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2030283557, now seen corresponding path program 215 times [2021-06-05 20:59:09,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:09,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652792759] [2021-06-05 20:59:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:09,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:09,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652792759] [2021-06-05 20:59:09,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652792759] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:09,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:09,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:09,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303514435] [2021-06-05 20:59:09,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:09,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:09,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:09,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:09,356 INFO L87 Difference]: Start difference. First operand 1858 states and 7526 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:09,412 INFO L93 Difference]: Finished difference Result 3901 states and 14962 transitions. [2021-06-05 20:59:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:09,412 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 [2021-06-05 20:59:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:09,419 INFO L225 Difference]: With dead ends: 3901 [2021-06-05 20:59:09,420 INFO L226 Difference]: Without dead ends: 3618 [2021-06-05 20:59:09,420 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2021-06-05 20:59:09,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 1894. [2021-06-05 20:59:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.039091389329108) internal successors, (7646), 1893 states have internal predecessors, (7646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 7646 transitions. [2021-06-05 20:59:09,468 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 7646 transitions. Word has length 25 [2021-06-05 20:59:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:09,468 INFO L482 AbstractCegarLoop]: Abstraction has 1894 states and 7646 transitions. [2021-06-05 20:59:09,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 7646 transitions. [2021-06-05 20:59:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:09,471 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:09,471 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:09,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 20:59:09,471 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:09,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2057875773, now seen corresponding path program 216 times [2021-06-05 20:59:09,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:09,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780957198] [2021-06-05 20:59:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:09,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:09,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780957198] [2021-06-05 20:59:09,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780957198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:09,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:09,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:09,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65920755] [2021-06-05 20:59:09,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:09,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:09,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:09,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:09,535 INFO L87 Difference]: Start difference. First operand 1894 states and 7646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:09,594 INFO L93 Difference]: Finished difference Result 3689 states and 14225 transitions. [2021-06-05 20:59:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:09,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:09,601 INFO L225 Difference]: With dead ends: 3689 [2021-06-05 20:59:09,601 INFO L226 Difference]: Without dead ends: 3366 [2021-06-05 20:59:09,601 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2021-06-05 20:59:09,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 1834. [2021-06-05 20:59:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.069285324604474) internal successors, (7459), 1833 states have internal predecessors, (7459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7459 transitions. [2021-06-05 20:59:09,647 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7459 transitions. Word has length 25 [2021-06-05 20:59:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:09,647 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7459 transitions. [2021-06-05 20:59:09,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7459 transitions. [2021-06-05 20:59:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:09,650 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:09,650 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:09,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 20:59:09,650 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:09,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1430018689, now seen corresponding path program 217 times [2021-06-05 20:59:09,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:09,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541045473] [2021-06-05 20:59:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:09,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:09,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541045473] [2021-06-05 20:59:09,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541045473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:09,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:09,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:09,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137810233] [2021-06-05 20:59:09,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:09,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:09,715 INFO L87 Difference]: Start difference. First operand 1834 states and 7459 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:09,783 INFO L93 Difference]: Finished difference Result 4355 states and 16847 transitions. [2021-06-05 20:59:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:09,784 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 [2021-06-05 20:59:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:09,792 INFO L225 Difference]: With dead ends: 4355 [2021-06-05 20:59:09,792 INFO L226 Difference]: Without dead ends: 4070 [2021-06-05 20:59:09,792 INFO L810 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 [2021-06-05 20:59:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-06-05 20:59:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 1919. [2021-06-05 20:59:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1918 states have (on average 4.064129301355579) internal successors, (7795), 1918 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 7795 transitions. [2021-06-05 20:59:09,844 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 7795 transitions. Word has length 25 [2021-06-05 20:59:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:09,844 INFO L482 AbstractCegarLoop]: Abstraction has 1919 states and 7795 transitions. [2021-06-05 20:59:09,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 7795 transitions. [2021-06-05 20:59:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:09,847 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:09,847 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:09,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 20:59:09,847 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:09,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:09,847 INFO L82 PathProgramCache]: Analyzing trace with hash -613318305, now seen corresponding path program 218 times [2021-06-05 20:59:09,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:09,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111142282] [2021-06-05 20:59:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:09,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:09,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111142282] [2021-06-05 20:59:09,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111142282] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:09,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:09,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:09,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482204415] [2021-06-05 20:59:09,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:09,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:09,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:09,915 INFO L87 Difference]: Start difference. First operand 1919 states and 7795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:09,973 INFO L93 Difference]: Finished difference Result 4353 states and 16796 transitions. [2021-06-05 20:59:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:09,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:09,982 INFO L225 Difference]: With dead ends: 4353 [2021-06-05 20:59:09,982 INFO L226 Difference]: Without dead ends: 4024 [2021-06-05 20:59:09,982 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-05 20:59:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 1873. [2021-06-05 20:59:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 4.072649572649572) internal successors, (7624), 1872 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 7624 transitions. [2021-06-05 20:59:10,033 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 7624 transitions. Word has length 25 [2021-06-05 20:59:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:10,033 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 7624 transitions. [2021-06-05 20:59:10,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 7624 transitions. [2021-06-05 20:59:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:10,035 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:10,035 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:10,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 20:59:10,035 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:10,036 INFO L82 PathProgramCache]: Analyzing trace with hash -686060961, now seen corresponding path program 219 times [2021-06-05 20:59:10,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:10,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488738640] [2021-06-05 20:59:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:10,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:10,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488738640] [2021-06-05 20:59:10,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488738640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:10,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:10,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:10,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224560378] [2021-06-05 20:59:10,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:10,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:10,109 INFO L87 Difference]: Start difference. First operand 1873 states and 7624 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:10,174 INFO L93 Difference]: Finished difference Result 4325 states and 16710 transitions. [2021-06-05 20:59:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:10,174 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 [2021-06-05 20:59:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:10,183 INFO L225 Difference]: With dead ends: 4325 [2021-06-05 20:59:10,183 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 20:59:10,183 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 20:59:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 1909. [2021-06-05 20:59:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.058700209643606) internal successors, (7744), 1908 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7744 transitions. [2021-06-05 20:59:10,234 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7744 transitions. Word has length 25 [2021-06-05 20:59:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:10,234 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7744 transitions. [2021-06-05 20:59:10,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7744 transitions. [2021-06-05 20:59:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:10,237 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:10,237 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:10,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 20:59:10,237 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:10,237 INFO L82 PathProgramCache]: Analyzing trace with hash -130272673, now seen corresponding path program 220 times [2021-06-05 20:59:10,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:10,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819318564] [2021-06-05 20:59:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:10,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:10,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819318564] [2021-06-05 20:59:10,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819318564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:10,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:10,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:10,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420235735] [2021-06-05 20:59:10,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:10,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:10,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:10,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:10,316 INFO L87 Difference]: Start difference. First operand 1909 states and 7744 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:10,377 INFO L93 Difference]: Finished difference Result 4303 states and 16593 transitions. [2021-06-05 20:59:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:10,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:10,386 INFO L225 Difference]: With dead ends: 4303 [2021-06-05 20:59:10,386 INFO L226 Difference]: Without dead ends: 4004 [2021-06-05 20:59:10,386 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2021-06-05 20:59:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 1873. [2021-06-05 20:59:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 4.063034188034188) internal successors, (7606), 1872 states have internal predecessors, (7606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 7606 transitions. [2021-06-05 20:59:10,436 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 7606 transitions. Word has length 25 [2021-06-05 20:59:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:10,436 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 7606 transitions. [2021-06-05 20:59:10,436 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) [2021-06-05 20:59:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 7606 transitions. [2021-06-05 20:59:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:10,439 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:10,439 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:10,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 20:59:10,439 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash 296286653, now seen corresponding path program 221 times [2021-06-05 20:59:10,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:10,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74820403] [2021-06-05 20:59:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:10,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:10,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74820403] [2021-06-05 20:59:10,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74820403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:10,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:10,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:10,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492328990] [2021-06-05 20:59:10,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:10,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:10,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:10,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:10,508 INFO L87 Difference]: Start difference. First operand 1873 states and 7606 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:10,568 INFO L93 Difference]: Finished difference Result 4321 states and 16682 transitions. [2021-06-05 20:59:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:10,568 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 [2021-06-05 20:59:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:10,576 INFO L225 Difference]: With dead ends: 4321 [2021-06-05 20:59:10,576 INFO L226 Difference]: Without dead ends: 4038 [2021-06-05 20:59:10,576 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-06-05 20:59:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 1909. [2021-06-05 20:59:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.049266247379455) internal successors, (7726), 1908 states have internal predecessors, (7726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7726 transitions. [2021-06-05 20:59:10,627 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7726 transitions. Word has length 25 [2021-06-05 20:59:10,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:10,627 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7726 transitions. [2021-06-05 20:59:10,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7726 transitions. [2021-06-05 20:59:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:10,630 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:10,630 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:10,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 20:59:10,630 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash 89478687, now seen corresponding path program 222 times [2021-06-05 20:59:10,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:10,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132078355] [2021-06-05 20:59:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:10,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:10,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132078355] [2021-06-05 20:59:10,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132078355] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:10,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:10,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:10,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173418091] [2021-06-05 20:59:10,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:10,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:10,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:10,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:10,694 INFO L87 Difference]: Start difference. First operand 1909 states and 7726 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:10,754 INFO L93 Difference]: Finished difference Result 4301 states and 16570 transitions. [2021-06-05 20:59:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:10,754 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 [2021-06-05 20:59:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:10,762 INFO L225 Difference]: With dead ends: 4301 [2021-06-05 20:59:10,762 INFO L226 Difference]: Without dead ends: 3984 [2021-06-05 20:59:10,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-05 20:59:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 1855. [2021-06-05 20:59:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.070118662351672) internal successors, (7546), 1854 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7546 transitions. [2021-06-05 20:59:10,812 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7546 transitions. Word has length 25 [2021-06-05 20:59:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:10,812 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7546 transitions. [2021-06-05 20:59:10,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7546 transitions. [2021-06-05 20:59:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:10,815 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:10,815 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:10,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 20:59:10,815 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:10,815 INFO L82 PathProgramCache]: Analyzing trace with hash -533336225, now seen corresponding path program 223 times [2021-06-05 20:59:10,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:10,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308677659] [2021-06-05 20:59:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:10,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:10,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308677659] [2021-06-05 20:59:10,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308677659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:10,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:10,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:10,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285566853] [2021-06-05 20:59:10,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:10,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:10,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:10,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:10,882 INFO L87 Difference]: Start difference. First operand 1855 states and 7546 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:10,942 INFO L93 Difference]: Finished difference Result 4461 states and 17211 transitions. [2021-06-05 20:59:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:10,951 INFO L225 Difference]: With dead ends: 4461 [2021-06-05 20:59:10,951 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 20:59:10,951 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 20:59:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 1948. [2021-06-05 20:59:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 4.054442732408834) internal successors, (7894), 1947 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 7894 transitions. [2021-06-05 20:59:11,003 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 7894 transitions. Word has length 25 [2021-06-05 20:59:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:11,003 INFO L482 AbstractCegarLoop]: Abstraction has 1948 states and 7894 transitions. [2021-06-05 20:59:11,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 7894 transitions. [2021-06-05 20:59:11,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:11,006 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:11,006 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:11,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 20:59:11,006 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:11,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1718294077, now seen corresponding path program 224 times [2021-06-05 20:59:11,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:11,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182599148] [2021-06-05 20:59:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:11,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:11,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182599148] [2021-06-05 20:59:11,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182599148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:11,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:11,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:11,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104215083] [2021-06-05 20:59:11,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:11,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:11,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:11,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:11,072 INFO L87 Difference]: Start difference. First operand 1948 states and 7894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:11,134 INFO L93 Difference]: Finished difference Result 4459 states and 17160 transitions. [2021-06-05 20:59:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:11,143 INFO L225 Difference]: With dead ends: 4459 [2021-06-05 20:59:11,143 INFO L226 Difference]: Without dead ends: 4130 [2021-06-05 20:59:11,143 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-06-05 20:59:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 1902. [2021-06-05 20:59:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 4.059968437664387) internal successors, (7718), 1901 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 7718 transitions. [2021-06-05 20:59:11,206 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 7718 transitions. Word has length 25 [2021-06-05 20:59:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:11,206 INFO L482 AbstractCegarLoop]: Abstraction has 1902 states and 7718 transitions. [2021-06-05 20:59:11,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 7718 transitions. [2021-06-05 20:59:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:11,209 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:11,209 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:11,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 20:59:11,209 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:11,209 INFO L82 PathProgramCache]: Analyzing trace with hash 585461727, now seen corresponding path program 225 times [2021-06-05 20:59:11,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:11,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756584175] [2021-06-05 20:59:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:11,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:11,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756584175] [2021-06-05 20:59:11,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756584175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:11,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:11,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:11,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958861062] [2021-06-05 20:59:11,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:11,278 INFO L87 Difference]: Start difference. First operand 1902 states and 7718 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:11,339 INFO L93 Difference]: Finished difference Result 4529 states and 17422 transitions. [2021-06-05 20:59:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:11,340 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 [2021-06-05 20:59:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:11,348 INFO L225 Difference]: With dead ends: 4529 [2021-06-05 20:59:11,348 INFO L226 Difference]: Without dead ends: 4244 [2021-06-05 20:59:11,349 INFO L810 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 [2021-06-05 20:59:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-06-05 20:59:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 1981. [2021-06-05 20:59:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1980 states have (on average 4.032828282828283) internal successors, (7985), 1980 states have internal predecessors, (7985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 7985 transitions. [2021-06-05 20:59:11,402 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 7985 transitions. Word has length 25 [2021-06-05 20:59:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:11,402 INFO L482 AbstractCegarLoop]: Abstraction has 1981 states and 7985 transitions. [2021-06-05 20:59:11,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 7985 transitions. [2021-06-05 20:59:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:11,404 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:11,404 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:11,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 20:59:11,404 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash 29673439, now seen corresponding path program 226 times [2021-06-05 20:59:11,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:11,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191288835] [2021-06-05 20:59:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:11,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:11,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191288835] [2021-06-05 20:59:11,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191288835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:11,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:11,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:11,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076875808] [2021-06-05 20:59:11,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:11,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:11,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:11,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:11,472 INFO L87 Difference]: Start difference. First operand 1981 states and 7985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:11,523 INFO L93 Difference]: Finished difference Result 4562 states and 17489 transitions. [2021-06-05 20:59:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:11,524 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 [2021-06-05 20:59:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:11,532 INFO L225 Difference]: With dead ends: 4562 [2021-06-05 20:59:11,532 INFO L226 Difference]: Without dead ends: 4165 [2021-06-05 20:59:11,533 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2021-06-05 20:59:11,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 1902. [2021-06-05 20:59:11,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 4.0394529195160445) internal successors, (7679), 1901 states have internal predecessors, (7679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 7679 transitions. [2021-06-05 20:59:11,585 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 7679 transitions. Word has length 25 [2021-06-05 20:59:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:11,585 INFO L482 AbstractCegarLoop]: Abstraction has 1902 states and 7679 transitions. [2021-06-05 20:59:11,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 7679 transitions. [2021-06-05 20:59:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:11,587 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:11,587 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:11,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 20:59:11,587 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1567809341, now seen corresponding path program 227 times [2021-06-05 20:59:11,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:11,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353637275] [2021-06-05 20:59:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:11,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:11,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353637275] [2021-06-05 20:59:11,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353637275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:11,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:11,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:11,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088826003] [2021-06-05 20:59:11,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:11,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:11,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:11,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:11,653 INFO L87 Difference]: Start difference. First operand 1902 states and 7679 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:11,711 INFO L93 Difference]: Finished difference Result 4508 states and 17322 transitions. [2021-06-05 20:59:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:11,720 INFO L225 Difference]: With dead ends: 4508 [2021-06-05 20:59:11,720 INFO L226 Difference]: Without dead ends: 4225 [2021-06-05 20:59:11,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2021-06-05 20:59:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 1964. [2021-06-05 20:59:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1963 states have (on average 4.022414671421294) internal successors, (7896), 1963 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 7896 transitions. [2021-06-05 20:59:11,773 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 7896 transitions. Word has length 25 [2021-06-05 20:59:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:11,773 INFO L482 AbstractCegarLoop]: Abstraction has 1964 states and 7896 transitions. [2021-06-05 20:59:11,773 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) [2021-06-05 20:59:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 7896 transitions. [2021-06-05 20:59:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:11,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:11,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:11,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 20:59:11,776 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash -789580257, now seen corresponding path program 228 times [2021-06-05 20:59:11,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:11,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36232580] [2021-06-05 20:59:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:11,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:11,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36232580] [2021-06-05 20:59:11,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36232580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:11,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:11,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:11,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995032361] [2021-06-05 20:59:11,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:11,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:11,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:11,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:11,842 INFO L87 Difference]: Start difference. First operand 1964 states and 7896 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:11,893 INFO L93 Difference]: Finished difference Result 4543 states and 17395 transitions. [2021-06-05 20:59:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:11,902 INFO L225 Difference]: With dead ends: 4543 [2021-06-05 20:59:11,902 INFO L226 Difference]: Without dead ends: 4116 [2021-06-05 20:59:11,902 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-06-05 20:59:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 1855. [2021-06-05 20:59:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.058791801510248) internal successors, (7525), 1854 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7525 transitions. [2021-06-05 20:59:11,953 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7525 transitions. Word has length 25 [2021-06-05 20:59:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:11,953 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7525 transitions. [2021-06-05 20:59:11,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7525 transitions. [2021-06-05 20:59:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:11,956 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:11,956 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:11,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 20:59:11,956 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:11,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1625649213, now seen corresponding path program 229 times [2021-06-05 20:59:11,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:11,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961521854] [2021-06-05 20:59:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:12,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:12,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961521854] [2021-06-05 20:59:12,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961521854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:12,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:12,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:12,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985788667] [2021-06-05 20:59:12,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:12,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:12,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:12,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:12,037 INFO L87 Difference]: Start difference. First operand 1855 states and 7525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:12,094 INFO L93 Difference]: Finished difference Result 4378 states and 16865 transitions. [2021-06-05 20:59:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:12,103 INFO L225 Difference]: With dead ends: 4378 [2021-06-05 20:59:12,103 INFO L226 Difference]: Without dead ends: 4093 [2021-06-05 20:59:12,103 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-06-05 20:59:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 1925. [2021-06-05 20:59:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 4.051975051975052) internal successors, (7796), 1924 states have internal predecessors, (7796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 7796 transitions. [2021-06-05 20:59:12,155 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 7796 transitions. Word has length 25 [2021-06-05 20:59:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:12,155 INFO L482 AbstractCegarLoop]: Abstraction has 1925 states and 7796 transitions. [2021-06-05 20:59:12,155 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) [2021-06-05 20:59:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 7796 transitions. [2021-06-05 20:59:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:12,158 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:12,158 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:12,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 20:59:12,158 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2113529795, now seen corresponding path program 230 times [2021-06-05 20:59:12,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:12,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992966314] [2021-06-05 20:59:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:12,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:12,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992966314] [2021-06-05 20:59:12,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992966314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:12,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:12,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:12,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478252652] [2021-06-05 20:59:12,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:12,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:12,238 INFO L87 Difference]: Start difference. First operand 1925 states and 7796 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:12,295 INFO L93 Difference]: Finished difference Result 4356 states and 16748 transitions. [2021-06-05 20:59:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:12,295 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 [2021-06-05 20:59:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:12,303 INFO L225 Difference]: With dead ends: 4356 [2021-06-05 20:59:12,304 INFO L226 Difference]: Without dead ends: 4057 [2021-06-05 20:59:12,304 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-06-05 20:59:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 1889. [2021-06-05 20:59:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 4.05614406779661) internal successors, (7658), 1888 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 7658 transitions. [2021-06-05 20:59:12,355 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 7658 transitions. Word has length 25 [2021-06-05 20:59:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:12,355 INFO L482 AbstractCegarLoop]: Abstraction has 1889 states and 7658 transitions. [2021-06-05 20:59:12,355 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) [2021-06-05 20:59:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 7658 transitions. [2021-06-05 20:59:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:12,358 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:12,358 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:12,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 20:59:12,358 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:12,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1008125855, now seen corresponding path program 231 times [2021-06-05 20:59:12,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:12,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176938952] [2021-06-05 20:59:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:12,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:12,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176938952] [2021-06-05 20:59:12,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176938952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:12,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:12,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:12,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4783767] [2021-06-05 20:59:12,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:12,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:12,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:12,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:12,431 INFO L87 Difference]: Start difference. First operand 1889 states and 7658 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:12,488 INFO L93 Difference]: Finished difference Result 4397 states and 16886 transitions. [2021-06-05 20:59:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:12,489 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 [2021-06-05 20:59:12,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:12,497 INFO L225 Difference]: With dead ends: 4397 [2021-06-05 20:59:12,497 INFO L226 Difference]: Without dead ends: 4112 [2021-06-05 20:59:12,497 INFO L810 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 [2021-06-05 20:59:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-06-05 20:59:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 1968. [2021-06-05 20:59:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 4.028978139298424) internal successors, (7925), 1967 states have internal predecessors, (7925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 7925 transitions. [2021-06-05 20:59:12,551 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 7925 transitions. Word has length 25 [2021-06-05 20:59:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:12,551 INFO L482 AbstractCegarLoop]: Abstraction has 1968 states and 7925 transitions. [2021-06-05 20:59:12,551 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) [2021-06-05 20:59:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 7925 transitions. [2021-06-05 20:59:12,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:12,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:12,554 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:12,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 20:59:12,554 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:12,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2003339203, now seen corresponding path program 232 times [2021-06-05 20:59:12,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:12,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571618660] [2021-06-05 20:59:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:12,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:12,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571618660] [2021-06-05 20:59:12,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571618660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:12,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:12,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:12,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249540632] [2021-06-05 20:59:12,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:12,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:12,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:12,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:12,632 INFO L87 Difference]: Start difference. First operand 1968 states and 7925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:12,683 INFO L93 Difference]: Finished difference Result 4430 states and 16953 transitions. [2021-06-05 20:59:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:12,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:12,692 INFO L225 Difference]: With dead ends: 4430 [2021-06-05 20:59:12,692 INFO L226 Difference]: Without dead ends: 4033 [2021-06-05 20:59:12,692 INFO L810 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 [2021-06-05 20:59:12,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-06-05 20:59:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 1889. [2021-06-05 20:59:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 4.038135593220339) internal successors, (7624), 1888 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 7624 transitions. [2021-06-05 20:59:12,743 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 7624 transitions. Word has length 25 [2021-06-05 20:59:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:12,743 INFO L482 AbstractCegarLoop]: Abstraction has 1889 states and 7624 transitions. [2021-06-05 20:59:12,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 7624 transitions. [2021-06-05 20:59:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:12,745 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:12,745 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:12,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 20:59:12,746 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash 644837437, now seen corresponding path program 233 times [2021-06-05 20:59:12,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:12,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998678228] [2021-06-05 20:59:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:12,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:12,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998678228] [2021-06-05 20:59:12,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998678228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:12,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:12,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:12,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599690140] [2021-06-05 20:59:12,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:12,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:12,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:12,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:12,824 INFO L87 Difference]: Start difference. First operand 1889 states and 7624 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:12,880 INFO L93 Difference]: Finished difference Result 4326 states and 16596 transitions. [2021-06-05 20:59:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:12,889 INFO L225 Difference]: With dead ends: 4326 [2021-06-05 20:59:12,889 INFO L226 Difference]: Without dead ends: 4063 [2021-06-05 20:59:12,889 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2021-06-05 20:59:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 1941. [2021-06-05 20:59:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 4.024742268041237) internal successors, (7808), 1940 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 7808 transitions. [2021-06-05 20:59:12,941 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 7808 transitions. Word has length 25 [2021-06-05 20:59:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:12,941 INFO L482 AbstractCegarLoop]: Abstraction has 1941 states and 7808 transitions. [2021-06-05 20:59:12,941 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) [2021-06-05 20:59:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 7808 transitions. [2021-06-05 20:59:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:12,943 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:12,943 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:12,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 20:59:12,943 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash 863189023, now seen corresponding path program 234 times [2021-06-05 20:59:12,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:12,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303828323] [2021-06-05 20:59:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:13,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:13,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303828323] [2021-06-05 20:59:13,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303828323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:13,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:13,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715324075] [2021-06-05 20:59:13,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:13,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:13,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:13,037 INFO L87 Difference]: Start difference. First operand 1941 states and 7808 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:13,089 INFO L93 Difference]: Finished difference Result 4254 states and 16284 transitions. [2021-06-05 20:59:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:13,098 INFO L225 Difference]: With dead ends: 4254 [2021-06-05 20:59:13,098 INFO L226 Difference]: Without dead ends: 3850 [2021-06-05 20:59:13,098 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2021-06-05 20:59:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 1855. [2021-06-05 20:59:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.049622437971952) internal successors, (7508), 1854 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7508 transitions. [2021-06-05 20:59:13,150 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7508 transitions. Word has length 25 [2021-06-05 20:59:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:13,150 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7508 transitions. [2021-06-05 20:59:13,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7508 transitions. [2021-06-05 20:59:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:13,153 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:13,153 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:13,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 20:59:13,153 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1696921573, now seen corresponding path program 235 times [2021-06-05 20:59:13,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:13,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168540939] [2021-06-05 20:59:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:13,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:13,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168540939] [2021-06-05 20:59:13,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168540939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:13,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:13,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:13,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735207319] [2021-06-05 20:59:13,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:13,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:13,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:13,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:13,235 INFO L87 Difference]: Start difference. First operand 1855 states and 7508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:13,293 INFO L93 Difference]: Finished difference Result 4347 states and 16754 transitions. [2021-06-05 20:59:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:13,301 INFO L225 Difference]: With dead ends: 4347 [2021-06-05 20:59:13,302 INFO L226 Difference]: Without dead ends: 4064 [2021-06-05 20:59:13,302 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-06-05 20:59:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 1917. [2021-06-05 20:59:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1916 states have (on average 4.0454070981210855) internal successors, (7751), 1916 states have internal predecessors, (7751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 7751 transitions. [2021-06-05 20:59:13,353 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 7751 transitions. Word has length 25 [2021-06-05 20:59:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:13,353 INFO L482 AbstractCegarLoop]: Abstraction has 1917 states and 7751 transitions. [2021-06-05 20:59:13,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 7751 transitions. [2021-06-05 20:59:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:13,356 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:13,356 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:13,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 20:59:13,356 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1903729539, now seen corresponding path program 236 times [2021-06-05 20:59:13,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:13,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190249103] [2021-06-05 20:59:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:13,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:13,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190249103] [2021-06-05 20:59:13,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190249103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:13,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:13,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:13,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188677001] [2021-06-05 20:59:13,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:13,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:13,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:13,422 INFO L87 Difference]: Start difference. First operand 1917 states and 7751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:13,481 INFO L93 Difference]: Finished difference Result 4327 states and 16642 transitions. [2021-06-05 20:59:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:13,481 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 [2021-06-05 20:59:13,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:13,489 INFO L225 Difference]: With dead ends: 4327 [2021-06-05 20:59:13,489 INFO L226 Difference]: Without dead ends: 4028 [2021-06-05 20:59:13,489 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-06-05 20:59:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 1881. [2021-06-05 20:59:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.049468085106383) internal successors, (7613), 1880 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7613 transitions. [2021-06-05 20:59:13,540 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7613 transitions. Word has length 25 [2021-06-05 20:59:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:13,541 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7613 transitions. [2021-06-05 20:59:13,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7613 transitions. [2021-06-05 20:59:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:13,543 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:13,543 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:13,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 20:59:13,543 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:13,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1980522365, now seen corresponding path program 237 times [2021-06-05 20:59:13,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:13,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351610981] [2021-06-05 20:59:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:13,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:13,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351610981] [2021-06-05 20:59:13,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351610981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:13,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:13,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:13,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845545243] [2021-06-05 20:59:13,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:13,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:13,609 INFO L87 Difference]: Start difference. First operand 1881 states and 7613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:13,672 INFO L93 Difference]: Finished difference Result 4366 states and 16775 transitions. [2021-06-05 20:59:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:13,681 INFO L225 Difference]: With dead ends: 4366 [2021-06-05 20:59:13,681 INFO L226 Difference]: Without dead ends: 4083 [2021-06-05 20:59:13,681 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2021-06-05 20:59:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 1943. [2021-06-05 20:59:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 4.0319258496395465) internal successors, (7830), 1942 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 7830 transitions. [2021-06-05 20:59:13,732 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 7830 transitions. Word has length 25 [2021-06-05 20:59:13,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:13,732 INFO L482 AbstractCegarLoop]: Abstraction has 1943 states and 7830 transitions. [2021-06-05 20:59:13,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 7830 transitions. [2021-06-05 20:59:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:13,735 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:13,735 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:13,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 20:59:13,735 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:13,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1462423293, now seen corresponding path program 238 times [2021-06-05 20:59:13,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:13,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262642281] [2021-06-05 20:59:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:13,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:13,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262642281] [2021-06-05 20:59:13,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262642281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:13,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:13,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:13,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112629456] [2021-06-05 20:59:13,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:13,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:13,801 INFO L87 Difference]: Start difference. First operand 1943 states and 7830 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:13,853 INFO L93 Difference]: Finished difference Result 4401 states and 16848 transitions. [2021-06-05 20:59:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:13,861 INFO L225 Difference]: With dead ends: 4401 [2021-06-05 20:59:13,861 INFO L226 Difference]: Without dead ends: 4021 [2021-06-05 20:59:13,861 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-06-05 20:59:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 1881. [2021-06-05 20:59:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.035638297872341) internal successors, (7587), 1880 states have internal predecessors, (7587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7587 transitions. [2021-06-05 20:59:13,912 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7587 transitions. Word has length 25 [2021-06-05 20:59:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:13,912 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7587 transitions. [2021-06-05 20:59:13,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7587 transitions. [2021-06-05 20:59:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:13,914 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:13,914 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:13,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 20:59:13,914 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:13,915 INFO L82 PathProgramCache]: Analyzing trace with hash 387599071, now seen corresponding path program 239 times [2021-06-05 20:59:13,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:13,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188752766] [2021-06-05 20:59:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:13,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:13,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188752766] [2021-06-05 20:59:13,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188752766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:13,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:13,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:13,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276787137] [2021-06-05 20:59:13,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:13,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:13,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:13,987 INFO L87 Difference]: Start difference. First operand 1881 states and 7587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:14,047 INFO L93 Difference]: Finished difference Result 4316 states and 16554 transitions. [2021-06-05 20:59:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:14,055 INFO L225 Difference]: With dead ends: 4316 [2021-06-05 20:59:14,055 INFO L226 Difference]: Without dead ends: 4053 [2021-06-05 20:59:14,055 INFO L810 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 [2021-06-05 20:59:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2021-06-05 20:59:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 1933. [2021-06-05 20:59:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.022256728778468) internal successors, (7771), 1932 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7771 transitions. [2021-06-05 20:59:14,106 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7771 transitions. Word has length 25 [2021-06-05 20:59:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:14,107 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7771 transitions. [2021-06-05 20:59:14,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7771 transitions. [2021-06-05 20:59:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:14,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:14,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:14,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 20:59:14,109 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1433436355, now seen corresponding path program 240 times [2021-06-05 20:59:14,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:14,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158698428] [2021-06-05 20:59:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:14,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:14,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158698428] [2021-06-05 20:59:14,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158698428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:14,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:14,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:14,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260115733] [2021-06-05 20:59:14,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:14,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:14,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:14,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:14,184 INFO L87 Difference]: Start difference. First operand 1933 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:14,235 INFO L93 Difference]: Finished difference Result 4244 states and 16242 transitions. [2021-06-05 20:59:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:14,244 INFO L225 Difference]: With dead ends: 4244 [2021-06-05 20:59:14,244 INFO L226 Difference]: Without dead ends: 3818 [2021-06-05 20:59:14,244 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2021-06-05 20:59:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 1825. [2021-06-05 20:59:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.076206140350878) internal successors, (7435), 1824 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7435 transitions. [2021-06-05 20:59:14,293 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7435 transitions. Word has length 25 [2021-06-05 20:59:14,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:14,293 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7435 transitions. [2021-06-05 20:59:14,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7435 transitions. [2021-06-05 20:59:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:14,296 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:14,296 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:14,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 20:59:14,296 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:14,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1478845923, now seen corresponding path program 241 times [2021-06-05 20:59:14,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:14,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163070732] [2021-06-05 20:59:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:14,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:14,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163070732] [2021-06-05 20:59:14,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163070732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:14,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:14,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470842476] [2021-06-05 20:59:14,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:14,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:14,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:14,373 INFO L87 Difference]: Start difference. First operand 1825 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:14,423 INFO L93 Difference]: Finished difference Result 4151 states and 15832 transitions. [2021-06-05 20:59:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:14,423 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 [2021-06-05 20:59:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:14,431 INFO L225 Difference]: With dead ends: 4151 [2021-06-05 20:59:14,432 INFO L226 Difference]: Without dead ends: 3904 [2021-06-05 20:59:14,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-05 20:59:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 1899. [2021-06-05 20:59:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 4.065331928345627) internal successors, (7716), 1898 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 7716 transitions. [2021-06-05 20:59:14,482 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 7716 transitions. Word has length 25 [2021-06-05 20:59:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:14,482 INFO L482 AbstractCegarLoop]: Abstraction has 1899 states and 7716 transitions. [2021-06-05 20:59:14,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 7716 transitions. [2021-06-05 20:59:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:14,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:14,485 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:14,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 20:59:14,485 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1184174207, now seen corresponding path program 242 times [2021-06-05 20:59:14,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:14,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96270132] [2021-06-05 20:59:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:14,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:14,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96270132] [2021-06-05 20:59:14,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96270132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:14,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:14,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:14,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780331785] [2021-06-05 20:59:14,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:14,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:14,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:14,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:14,575 INFO L87 Difference]: Start difference. First operand 1899 states and 7716 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:14,627 INFO L93 Difference]: Finished difference Result 4222 states and 16071 transitions. [2021-06-05 20:59:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:14,635 INFO L225 Difference]: With dead ends: 4222 [2021-06-05 20:59:14,635 INFO L226 Difference]: Without dead ends: 3860 [2021-06-05 20:59:14,635 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2021-06-05 20:59:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 1855. [2021-06-05 20:59:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.067961165048544) internal successors, (7542), 1854 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7542 transitions. [2021-06-05 20:59:14,685 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7542 transitions. Word has length 25 [2021-06-05 20:59:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:14,685 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7542 transitions. [2021-06-05 20:59:14,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7542 transitions. [2021-06-05 20:59:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:14,688 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:14,688 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:14,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 20:59:14,688 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -233717445, now seen corresponding path program 243 times [2021-06-05 20:59:14,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:14,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664542494] [2021-06-05 20:59:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:14,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:14,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664542494] [2021-06-05 20:59:14,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664542494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:14,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:14,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:14,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807436630] [2021-06-05 20:59:14,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:14,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:14,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:14,779 INFO L87 Difference]: Start difference. First operand 1855 states and 7542 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:14,833 INFO L93 Difference]: Finished difference Result 4102 states and 15632 transitions. [2021-06-05 20:59:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:14,842 INFO L225 Difference]: With dead ends: 4102 [2021-06-05 20:59:14,842 INFO L226 Difference]: Without dead ends: 3855 [2021-06-05 20:59:14,842 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:14,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2021-06-05 20:59:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 1883. [2021-06-05 20:59:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.054197662061637) internal successors, (7630), 1882 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7630 transitions. [2021-06-05 20:59:14,902 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7630 transitions. Word has length 25 [2021-06-05 20:59:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:14,902 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7630 transitions. [2021-06-05 20:59:14,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7630 transitions. [2021-06-05 20:59:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:14,904 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:14,904 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:14,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 20:59:14,904 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1823652195, now seen corresponding path program 244 times [2021-06-05 20:59:14,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:14,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538021340] [2021-06-05 20:59:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:14,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:14,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538021340] [2021-06-05 20:59:14,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538021340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:14,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:14,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:14,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965072321] [2021-06-05 20:59:14,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:14,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:14,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:14,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:14,981 INFO L87 Difference]: Start difference. First operand 1883 states and 7630 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:15,047 INFO L93 Difference]: Finished difference Result 4140 states and 15757 transitions. [2021-06-05 20:59:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:15,055 INFO L225 Difference]: With dead ends: 4140 [2021-06-05 20:59:15,055 INFO L226 Difference]: Without dead ends: 3827 [2021-06-05 20:59:15,056 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-06-05 20:59:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 1855. [2021-06-05 20:59:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.060409924487594) internal successors, (7528), 1854 states have internal predecessors, (7528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7528 transitions. [2021-06-05 20:59:15,105 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7528 transitions. Word has length 25 [2021-06-05 20:59:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:15,105 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7528 transitions. [2021-06-05 20:59:15,105 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) [2021-06-05 20:59:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7528 transitions. [2021-06-05 20:59:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:15,107 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:15,107 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:15,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 20:59:15,108 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:15,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1833151615, now seen corresponding path program 245 times [2021-06-05 20:59:15,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:15,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161182303] [2021-06-05 20:59:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:15,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:15,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161182303] [2021-06-05 20:59:15,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161182303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:15,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:15,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:15,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617128411] [2021-06-05 20:59:15,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:15,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:15,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:15,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:15,179 INFO L87 Difference]: Start difference. First operand 1855 states and 7528 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:15,243 INFO L93 Difference]: Finished difference Result 4262 states and 16236 transitions. [2021-06-05 20:59:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:15,251 INFO L225 Difference]: With dead ends: 4262 [2021-06-05 20:59:15,252 INFO L226 Difference]: Without dead ends: 3977 [2021-06-05 20:59:15,252 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-05 20:59:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 1934. [2021-06-05 20:59:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 4.032591826176927) internal successors, (7795), 1933 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7795 transitions. [2021-06-05 20:59:15,303 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7795 transitions. Word has length 25 [2021-06-05 20:59:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:15,303 INFO L482 AbstractCegarLoop]: Abstraction has 1934 states and 7795 transitions. [2021-06-05 20:59:15,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7795 transitions. [2021-06-05 20:59:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:15,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:15,305 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:15,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 20:59:15,305 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:15,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2131204573, now seen corresponding path program 246 times [2021-06-05 20:59:15,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:15,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24186560] [2021-06-05 20:59:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:15,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:15,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24186560] [2021-06-05 20:59:15,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24186560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:15,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:15,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:15,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362231187] [2021-06-05 20:59:15,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:15,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:15,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:15,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:15,377 INFO L87 Difference]: Start difference. First operand 1934 states and 7795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:15,432 INFO L93 Difference]: Finished difference Result 4295 states and 16303 transitions. [2021-06-05 20:59:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:15,432 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 [2021-06-05 20:59:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:15,440 INFO L225 Difference]: With dead ends: 4295 [2021-06-05 20:59:15,440 INFO L226 Difference]: Without dead ends: 3868 [2021-06-05 20:59:15,440 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-06-05 20:59:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 1825. [2021-06-05 20:59:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.069627192982456) internal successors, (7423), 1824 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7423 transitions. [2021-06-05 20:59:15,489 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7423 transitions. Word has length 25 [2021-06-05 20:59:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:15,489 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7423 transitions. [2021-06-05 20:59:15,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7423 transitions. [2021-06-05 20:59:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:15,491 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:15,491 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:15,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 20:59:15,492 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:15,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:15,492 INFO L82 PathProgramCache]: Analyzing trace with hash -179666245, now seen corresponding path program 247 times [2021-06-05 20:59:15,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:15,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17607840] [2021-06-05 20:59:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:15,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:15,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17607840] [2021-06-05 20:59:15,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17607840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:15,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:15,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:15,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611579646] [2021-06-05 20:59:15,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:15,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:15,569 INFO L87 Difference]: Start difference. First operand 1825 states and 7423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:15,620 INFO L93 Difference]: Finished difference Result 4052 states and 15424 transitions. [2021-06-05 20:59:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:15,628 INFO L225 Difference]: With dead ends: 4052 [2021-06-05 20:59:15,628 INFO L226 Difference]: Without dead ends: 3805 [2021-06-05 20:59:15,628 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-06-05 20:59:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 1885. [2021-06-05 20:59:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 4.058917197452229) internal successors, (7647), 1884 states have internal predecessors, (7647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 7647 transitions. [2021-06-05 20:59:15,677 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 7647 transitions. Word has length 25 [2021-06-05 20:59:15,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:15,677 INFO L482 AbstractCegarLoop]: Abstraction has 1885 states and 7647 transitions. [2021-06-05 20:59:15,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 7647 transitions. [2021-06-05 20:59:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:15,680 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:15,680 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:15,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 20:59:15,680 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1811613411, now seen corresponding path program 248 times [2021-06-05 20:59:15,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:15,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345476288] [2021-06-05 20:59:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:15,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:15,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345476288] [2021-06-05 20:59:15,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345476288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:15,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:15,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:15,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249680794] [2021-06-05 20:59:15,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:15,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:15,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:15,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:15,757 INFO L87 Difference]: Start difference. First operand 1885 states and 7647 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:15,808 INFO L93 Difference]: Finished difference Result 4123 states and 15663 transitions. [2021-06-05 20:59:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:15,809 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 [2021-06-05 20:59:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:15,816 INFO L225 Difference]: With dead ends: 4123 [2021-06-05 20:59:15,816 INFO L226 Difference]: Without dead ends: 3761 [2021-06-05 20:59:15,817 INFO L810 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 [2021-06-05 20:59:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-06-05 20:59:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 1841. [2021-06-05 20:59:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.064673913043478) internal successors, (7479), 1840 states have internal predecessors, (7479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7479 transitions. [2021-06-05 20:59:15,865 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7479 transitions. Word has length 25 [2021-06-05 20:59:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:15,865 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7479 transitions. [2021-06-05 20:59:15,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7479 transitions. [2021-06-05 20:59:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:15,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:15,867 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:15,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 20:59:15,868 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:15,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:15,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2119464325, now seen corresponding path program 249 times [2021-06-05 20:59:15,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:15,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926046300] [2021-06-05 20:59:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:15,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:15,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926046300] [2021-06-05 20:59:15,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926046300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:15,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:15,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:15,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6412893] [2021-06-05 20:59:15,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:15,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:15,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:15,939 INFO L87 Difference]: Start difference. First operand 1841 states and 7479 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:15,993 INFO L93 Difference]: Finished difference Result 3953 states and 15025 transitions. [2021-06-05 20:59:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:16,000 INFO L225 Difference]: With dead ends: 3953 [2021-06-05 20:59:16,001 INFO L226 Difference]: Without dead ends: 3706 [2021-06-05 20:59:16,001 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-06-05 20:59:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 1857. [2021-06-05 20:59:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 4.055495689655173) internal successors, (7527), 1856 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 7527 transitions. [2021-06-05 20:59:16,049 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 7527 transitions. Word has length 25 [2021-06-05 20:59:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:16,049 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 7527 transitions. [2021-06-05 20:59:16,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 7527 transitions. [2021-06-05 20:59:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:16,051 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:16,051 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:16,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 20:59:16,051 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:16,052 INFO L82 PathProgramCache]: Analyzing trace with hash 627580637, now seen corresponding path program 250 times [2021-06-05 20:59:16,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:16,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450918826] [2021-06-05 20:59:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:16,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:16,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450918826] [2021-06-05 20:59:16,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450918826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:16,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:16,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:16,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446675961] [2021-06-05 20:59:16,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:16,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:16,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:16,121 INFO L87 Difference]: Start difference. First operand 1857 states and 7527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:16,182 INFO L93 Difference]: Finished difference Result 3953 states and 15009 transitions. [2021-06-05 20:59:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:16,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:16,190 INFO L225 Difference]: With dead ends: 3953 [2021-06-05 20:59:16,190 INFO L226 Difference]: Without dead ends: 3690 [2021-06-05 20:59:16,190 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:16,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-06-05 20:59:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 1841. [2021-06-05 20:59:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.060326086956522) internal successors, (7471), 1840 states have internal predecessors, (7471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7471 transitions. [2021-06-05 20:59:16,238 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7471 transitions. Word has length 25 [2021-06-05 20:59:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:16,238 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7471 transitions. [2021-06-05 20:59:16,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7471 transitions. [2021-06-05 20:59:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:16,240 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:16,241 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:16,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 20:59:16,241 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:16,241 INFO L82 PathProgramCache]: Analyzing trace with hash -10582849, now seen corresponding path program 251 times [2021-06-05 20:59:16,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:16,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975148211] [2021-06-05 20:59:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:16,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:16,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975148211] [2021-06-05 20:59:16,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975148211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:16,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:16,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:16,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672413117] [2021-06-05 20:59:16,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:16,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:16,319 INFO L87 Difference]: Start difference. First operand 1841 states and 7471 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:16,388 INFO L93 Difference]: Finished difference Result 4052 states and 15400 transitions. [2021-06-05 20:59:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:16,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:16,397 INFO L225 Difference]: With dead ends: 4052 [2021-06-05 20:59:16,397 INFO L226 Difference]: Without dead ends: 3805 [2021-06-05 20:59:16,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-06-05 20:59:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 1885. [2021-06-05 20:59:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 4.046178343949045) internal successors, (7623), 1884 states have internal predecessors, (7623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 7623 transitions. [2021-06-05 20:59:16,446 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 7623 transitions. Word has length 25 [2021-06-05 20:59:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:16,446 INFO L482 AbstractCegarLoop]: Abstraction has 1885 states and 7623 transitions. [2021-06-05 20:59:16,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 7623 transitions. [2021-06-05 20:59:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:16,449 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:16,449 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:16,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 20:59:16,449 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1014914787, now seen corresponding path program 252 times [2021-06-05 20:59:16,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:16,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852127239] [2021-06-05 20:59:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:16,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:16,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852127239] [2021-06-05 20:59:16,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852127239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:16,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:16,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:16,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617457956] [2021-06-05 20:59:16,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:16,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:16,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:16,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:16,532 INFO L87 Difference]: Start difference. First operand 1885 states and 7623 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:16,591 INFO L93 Difference]: Finished difference Result 4123 states and 15639 transitions. [2021-06-05 20:59:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:16,592 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 [2021-06-05 20:59:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:16,600 INFO L225 Difference]: With dead ends: 4123 [2021-06-05 20:59:16,600 INFO L226 Difference]: Without dead ends: 3745 [2021-06-05 20:59:16,600 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-06-05 20:59:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 1825. [2021-06-05 20:59:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.0652412280701755) internal successors, (7415), 1824 states have internal predecessors, (7415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7415 transitions. [2021-06-05 20:59:16,649 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7415 transitions. Word has length 25 [2021-06-05 20:59:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:16,649 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7415 transitions. [2021-06-05 20:59:16,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7415 transitions. [2021-06-05 20:59:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:16,652 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:16,652 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:16,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 20:59:16,652 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1721451033, now seen corresponding path program 253 times [2021-06-05 20:59:16,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:16,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173400465] [2021-06-05 20:59:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:16,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:16,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173400465] [2021-06-05 20:59:16,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173400465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:16,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:16,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:16,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311103862] [2021-06-05 20:59:16,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:16,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:16,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:16,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:16,754 INFO L87 Difference]: Start difference. First operand 1825 states and 7415 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:16,811 INFO L93 Difference]: Finished difference Result 3930 states and 14960 transitions. [2021-06-05 20:59:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:16,818 INFO L225 Difference]: With dead ends: 3930 [2021-06-05 20:59:16,819 INFO L226 Difference]: Without dead ends: 3683 [2021-06-05 20:59:16,819 INFO L810 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 [2021-06-05 20:59:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2021-06-05 20:59:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 1861. [2021-06-05 20:59:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 4.053225806451613) internal successors, (7539), 1860 states have internal predecessors, (7539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 7539 transitions. [2021-06-05 20:59:16,867 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 7539 transitions. Word has length 25 [2021-06-05 20:59:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:16,867 INFO L482 AbstractCegarLoop]: Abstraction has 1861 states and 7539 transitions. [2021-06-05 20:59:16,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 7539 transitions. [2021-06-05 20:59:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:16,870 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:16,870 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:16,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 20:59:16,870 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash 131516283, now seen corresponding path program 254 times [2021-06-05 20:59:16,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:16,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526491143] [2021-06-05 20:59:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:16,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:16,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526491143] [2021-06-05 20:59:16,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526491143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:16,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:16,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:16,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643059326] [2021-06-05 20:59:16,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:16,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:16,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:16,941 INFO L87 Difference]: Start difference. First operand 1861 states and 7539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:17,006 INFO L93 Difference]: Finished difference Result 3968 states and 15085 transitions. [2021-06-05 20:59:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:17,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:17,014 INFO L225 Difference]: With dead ends: 3968 [2021-06-05 20:59:17,014 INFO L226 Difference]: Without dead ends: 3655 [2021-06-05 20:59:17,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-06-05 20:59:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 1833. [2021-06-05 20:59:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 4.062772925764192) internal successors, (7443), 1832 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 7443 transitions. [2021-06-05 20:59:17,061 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 7443 transitions. Word has length 25 [2021-06-05 20:59:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:17,062 INFO L482 AbstractCegarLoop]: Abstraction has 1833 states and 7443 transitions. [2021-06-05 20:59:17,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 7443 transitions. [2021-06-05 20:59:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:17,064 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:17,064 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:17,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 20:59:17,064 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:17,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1514643067, now seen corresponding path program 255 times [2021-06-05 20:59:17,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:17,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304399034] [2021-06-05 20:59:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:17,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:17,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304399034] [2021-06-05 20:59:17,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304399034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:17,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:17,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:17,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253231497] [2021-06-05 20:59:17,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:17,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:17,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:17,141 INFO L87 Difference]: Start difference. First operand 1833 states and 7443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:17,203 INFO L93 Difference]: Finished difference Result 3880 states and 14747 transitions. [2021-06-05 20:59:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:17,211 INFO L225 Difference]: With dead ends: 3880 [2021-06-05 20:59:17,211 INFO L226 Difference]: Without dead ends: 3633 [2021-06-05 20:59:17,211 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2021-06-05 20:59:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 1849. [2021-06-05 20:59:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 4.053571428571429) internal successors, (7491), 1848 states have internal predecessors, (7491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 7491 transitions. [2021-06-05 20:59:17,259 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 7491 transitions. Word has length 25 [2021-06-05 20:59:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:17,259 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 7491 transitions. [2021-06-05 20:59:17,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 7491 transitions. [2021-06-05 20:59:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:17,261 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:17,261 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:17,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 20:59:17,262 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:17,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1099827589, now seen corresponding path program 256 times [2021-06-05 20:59:17,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:17,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685777448] [2021-06-05 20:59:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:17,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:17,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685777448] [2021-06-05 20:59:17,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685777448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:17,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:17,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:17,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955284227] [2021-06-05 20:59:17,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:17,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:17,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:17,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:17,329 INFO L87 Difference]: Start difference. First operand 1849 states and 7491 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:17,396 INFO L93 Difference]: Finished difference Result 3880 states and 14731 transitions. [2021-06-05 20:59:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:17,396 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 [2021-06-05 20:59:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:17,404 INFO L225 Difference]: With dead ends: 3880 [2021-06-05 20:59:17,404 INFO L226 Difference]: Without dead ends: 3617 [2021-06-05 20:59:17,404 INFO L810 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 [2021-06-05 20:59:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2021-06-05 20:59:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 1833. [2021-06-05 20:59:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 4.058406113537118) internal successors, (7435), 1832 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 7435 transitions. [2021-06-05 20:59:17,451 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 7435 transitions. Word has length 25 [2021-06-05 20:59:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:17,451 INFO L482 AbstractCegarLoop]: Abstraction has 1833 states and 7435 transitions. [2021-06-05 20:59:17,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 7435 transitions. [2021-06-05 20:59:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:17,454 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:17,454 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:17,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 20:59:17,454 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1363162275, now seen corresponding path program 257 times [2021-06-05 20:59:17,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:17,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350864764] [2021-06-05 20:59:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:17,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:17,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350864764] [2021-06-05 20:59:17,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350864764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:17,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:17,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:17,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112135750] [2021-06-05 20:59:17,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:17,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:17,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:17,519 INFO L87 Difference]: Start difference. First operand 1833 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:17,586 INFO L93 Difference]: Finished difference Result 3968 states and 15097 transitions. [2021-06-05 20:59:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:17,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:17,594 INFO L225 Difference]: With dead ends: 3968 [2021-06-05 20:59:17,594 INFO L226 Difference]: Without dead ends: 3683 [2021-06-05 20:59:17,594 INFO L810 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 [2021-06-05 20:59:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2021-06-05 20:59:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 1861. [2021-06-05 20:59:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 4.044623655913979) internal successors, (7523), 1860 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 7523 transitions. [2021-06-05 20:59:17,642 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 7523 transitions. Word has length 25 [2021-06-05 20:59:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:17,643 INFO L482 AbstractCegarLoop]: Abstraction has 1861 states and 7523 transitions. [2021-06-05 20:59:17,643 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) [2021-06-05 20:59:17,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 7523 transitions. [2021-06-05 20:59:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:17,645 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:17,645 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:17,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 20:59:17,645 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:17,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1539660475, now seen corresponding path program 258 times [2021-06-05 20:59:17,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:17,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729208410] [2021-06-05 20:59:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:17,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:17,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729208410] [2021-06-05 20:59:17,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729208410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:17,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:17,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:17,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212228850] [2021-06-05 20:59:17,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:17,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:17,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:17,709 INFO L87 Difference]: Start difference. First operand 1861 states and 7523 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:17,777 INFO L93 Difference]: Finished difference Result 3930 states and 14916 transitions. [2021-06-05 20:59:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:17,784 INFO L225 Difference]: With dead ends: 3930 [2021-06-05 20:59:17,784 INFO L226 Difference]: Without dead ends: 3647 [2021-06-05 20:59:17,784 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-06-05 20:59:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 1825. [2021-06-05 20:59:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.063048245614035) internal successors, (7411), 1824 states have internal predecessors, (7411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7411 transitions. [2021-06-05 20:59:17,832 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7411 transitions. Word has length 25 [2021-06-05 20:59:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:17,832 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7411 transitions. [2021-06-05 20:59:17,832 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) [2021-06-05 20:59:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7411 transitions. [2021-06-05 20:59:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:17,834 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:17,835 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:17,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 20:59:17,835 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash -457948993, now seen corresponding path program 259 times [2021-06-05 20:59:17,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:17,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091927227] [2021-06-05 20:59:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:17,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:17,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091927227] [2021-06-05 20:59:17,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091927227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:17,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:17,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:17,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626472344] [2021-06-05 20:59:17,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:17,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:17,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:17,899 INFO L87 Difference]: Start difference. First operand 1825 states and 7411 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:17,958 INFO L93 Difference]: Finished difference Result 4140 states and 15783 transitions. [2021-06-05 20:59:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:17,966 INFO L225 Difference]: With dead ends: 4140 [2021-06-05 20:59:17,966 INFO L226 Difference]: Without dead ends: 3855 [2021-06-05 20:59:17,967 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2021-06-05 20:59:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 1883. [2021-06-05 20:59:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.053134962805526) internal successors, (7628), 1882 states have internal predecessors, (7628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7628 transitions. [2021-06-05 20:59:18,016 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7628 transitions. Word has length 25 [2021-06-05 20:59:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:18,016 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7628 transitions. [2021-06-05 20:59:18,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7628 transitions. [2021-06-05 20:59:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:18,019 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:18,019 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:18,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 20:59:18,019 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:18,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1850093539, now seen corresponding path program 260 times [2021-06-05 20:59:18,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:18,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165072475] [2021-06-05 20:59:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:18,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:18,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165072475] [2021-06-05 20:59:18,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165072475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:18,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:18,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:18,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397369035] [2021-06-05 20:59:18,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:18,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:18,084 INFO L87 Difference]: Start difference. First operand 1883 states and 7628 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:18,140 INFO L93 Difference]: Finished difference Result 4102 states and 15602 transitions. [2021-06-05 20:59:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:18,140 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 [2021-06-05 20:59:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:18,148 INFO L225 Difference]: With dead ends: 4102 [2021-06-05 20:59:18,148 INFO L226 Difference]: Without dead ends: 3827 [2021-06-05 20:59:18,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-06-05 20:59:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 1855. [2021-06-05 20:59:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.05933117583603) internal successors, (7526), 1854 states have internal predecessors, (7526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7526 transitions. [2021-06-05 20:59:18,198 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7526 transitions. Word has length 25 [2021-06-05 20:59:18,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:18,198 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7526 transitions. [2021-06-05 20:59:18,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7526 transitions. [2021-06-05 20:59:18,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:18,200 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:18,200 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:18,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 20:59:18,200 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:18,201 INFO L82 PathProgramCache]: Analyzing trace with hash 746700189, now seen corresponding path program 261 times [2021-06-05 20:59:18,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:18,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845511660] [2021-06-05 20:59:18,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:18,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:18,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845511660] [2021-06-05 20:59:18,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845511660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:18,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:18,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:18,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612870038] [2021-06-05 20:59:18,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:18,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:18,269 INFO L87 Difference]: Start difference. First operand 1855 states and 7526 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:18,346 INFO L93 Difference]: Finished difference Result 4262 states and 16234 transitions. [2021-06-05 20:59:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:18,354 INFO L225 Difference]: With dead ends: 4262 [2021-06-05 20:59:18,354 INFO L226 Difference]: Without dead ends: 3977 [2021-06-05 20:59:18,354 INFO L810 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 [2021-06-05 20:59:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-05 20:59:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 1934. [2021-06-05 20:59:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 4.031557165028453) internal successors, (7793), 1933 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7793 transitions. [2021-06-05 20:59:18,405 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7793 transitions. Word has length 25 [2021-06-05 20:59:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:18,405 INFO L482 AbstractCegarLoop]: Abstraction has 1934 states and 7793 transitions. [2021-06-05 20:59:18,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7793 transitions. [2021-06-05 20:59:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:18,408 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:18,408 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:18,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 20:59:18,408 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1478782493, now seen corresponding path program 262 times [2021-06-05 20:59:18,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:18,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152358184] [2021-06-05 20:59:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:18,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:18,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152358184] [2021-06-05 20:59:18,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152358184] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:18,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:18,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:18,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411442066] [2021-06-05 20:59:18,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:18,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:18,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:18,474 INFO L87 Difference]: Start difference. First operand 1934 states and 7793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:18,522 INFO L93 Difference]: Finished difference Result 4295 states and 16301 transitions. [2021-06-05 20:59:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:18,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:18,531 INFO L225 Difference]: With dead ends: 4295 [2021-06-05 20:59:18,531 INFO L226 Difference]: Without dead ends: 3898 [2021-06-05 20:59:18,531 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-05 20:59:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 1855. [2021-06-05 20:59:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.0431499460625675) internal successors, (7496), 1854 states have internal predecessors, (7496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7496 transitions. [2021-06-05 20:59:18,583 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7496 transitions. Word has length 25 [2021-06-05 20:59:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:18,584 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7496 transitions. [2021-06-05 20:59:18,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7496 transitions. [2021-06-05 20:59:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:18,586 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:18,586 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:18,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 20:59:18,587 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:18,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1110957563, now seen corresponding path program 263 times [2021-06-05 20:59:18,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:18,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275097709] [2021-06-05 20:59:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:18,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:18,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275097709] [2021-06-05 20:59:18,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275097709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:18,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:18,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:18,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226621561] [2021-06-05 20:59:18,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:18,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:18,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:18,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:18,672 INFO L87 Difference]: Start difference. First operand 1855 states and 7496 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:18,727 INFO L93 Difference]: Finished difference Result 4151 states and 15764 transitions. [2021-06-05 20:59:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:18,735 INFO L225 Difference]: With dead ends: 4151 [2021-06-05 20:59:18,735 INFO L226 Difference]: Without dead ends: 3904 [2021-06-05 20:59:18,735 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-05 20:59:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 1899. [2021-06-05 20:59:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 4.029504741833509) internal successors, (7648), 1898 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 7648 transitions. [2021-06-05 20:59:18,784 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 7648 transitions. Word has length 25 [2021-06-05 20:59:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:18,784 INFO L482 AbstractCegarLoop]: Abstraction has 1899 states and 7648 transitions. [2021-06-05 20:59:18,784 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) [2021-06-05 20:59:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 7648 transitions. [2021-06-05 20:59:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:18,787 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:18,787 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:18,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 20:59:18,787 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash 41438557, now seen corresponding path program 264 times [2021-06-05 20:59:18,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:18,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38899242] [2021-06-05 20:59:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:18,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:18,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38899242] [2021-06-05 20:59:18,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38899242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:18,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:18,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600236118] [2021-06-05 20:59:18,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:18,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:18,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:18,862 INFO L87 Difference]: Start difference. First operand 1899 states and 7648 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:18,910 INFO L93 Difference]: Finished difference Result 4222 states and 16003 transitions. [2021-06-05 20:59:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:18,910 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 [2021-06-05 20:59:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:18,917 INFO L225 Difference]: With dead ends: 4222 [2021-06-05 20:59:18,918 INFO L226 Difference]: Without dead ends: 3818 [2021-06-05 20:59:18,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2021-06-05 20:59:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 1813. [2021-06-05 20:59:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.068984547461369) internal successors, (7373), 1812 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7373 transitions. [2021-06-05 20:59:18,965 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7373 transitions. Word has length 25 [2021-06-05 20:59:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:18,965 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7373 transitions. [2021-06-05 20:59:18,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7373 transitions. [2021-06-05 20:59:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:18,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:18,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:18,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 20:59:18,968 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash -454950149, now seen corresponding path program 265 times [2021-06-05 20:59:18,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:18,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707165132] [2021-06-05 20:59:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:19,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:19,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707165132] [2021-06-05 20:59:19,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707165132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:19,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:19,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:19,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137313738] [2021-06-05 20:59:19,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:19,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:19,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:19,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:19,049 INFO L87 Difference]: Start difference. First operand 1813 states and 7373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:19,096 INFO L93 Difference]: Finished difference Result 4161 states and 15891 transitions. [2021-06-05 20:59:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:19,104 INFO L225 Difference]: With dead ends: 4161 [2021-06-05 20:59:19,105 INFO L226 Difference]: Without dead ends: 3914 [2021-06-05 20:59:19,105 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-06-05 20:59:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 1857. [2021-06-05 20:59:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 4.054418103448276) internal successors, (7525), 1856 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 7525 transitions. [2021-06-05 20:59:19,154 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 7525 transitions. Word has length 25 [2021-06-05 20:59:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:19,154 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 7525 transitions. [2021-06-05 20:59:19,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 7525 transitions. [2021-06-05 20:59:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:19,156 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:19,156 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:19,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 20:59:19,156 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2086897315, now seen corresponding path program 266 times [2021-06-05 20:59:19,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:19,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813613957] [2021-06-05 20:59:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:19,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:19,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813613957] [2021-06-05 20:59:19,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813613957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:19,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:19,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:19,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705979547] [2021-06-05 20:59:19,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:19,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:19,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:19,252 INFO L87 Difference]: Start difference. First operand 1857 states and 7525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:19,299 INFO L93 Difference]: Finished difference Result 4232 states and 16130 transitions. [2021-06-05 20:59:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:19,300 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 [2021-06-05 20:59:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:19,307 INFO L225 Difference]: With dead ends: 4232 [2021-06-05 20:59:19,307 INFO L226 Difference]: Without dead ends: 3870 [2021-06-05 20:59:19,307 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-06-05 20:59:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 1813. [2021-06-05 20:59:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.056843267108167) internal successors, (7351), 1812 states have internal predecessors, (7351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7351 transitions. [2021-06-05 20:59:19,355 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7351 transitions. Word has length 25 [2021-06-05 20:59:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:19,356 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7351 transitions. [2021-06-05 20:59:19,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7351 transitions. [2021-06-05 20:59:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:19,358 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:19,358 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:19,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 20:59:19,358 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash 790178329, now seen corresponding path program 267 times [2021-06-05 20:59:19,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:19,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641977641] [2021-06-05 20:59:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:19,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:19,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641977641] [2021-06-05 20:59:19,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641977641] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:19,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:19,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:19,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902809160] [2021-06-05 20:59:19,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:19,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:19,439 INFO L87 Difference]: Start difference. First operand 1813 states and 7351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:19,485 INFO L93 Difference]: Finished difference Result 4112 states and 15691 transitions. [2021-06-05 20:59:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:19,493 INFO L225 Difference]: With dead ends: 4112 [2021-06-05 20:59:19,493 INFO L226 Difference]: Without dead ends: 3865 [2021-06-05 20:59:19,493 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-05 20:59:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 1841. [2021-06-05 20:59:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.042934782608696) internal successors, (7439), 1840 states have internal predecessors, (7439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7439 transitions. [2021-06-05 20:59:19,542 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7439 transitions. Word has length 25 [2021-06-05 20:59:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:19,542 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7439 transitions. [2021-06-05 20:59:19,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7439 transitions. [2021-06-05 20:59:19,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:19,544 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:19,544 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:19,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 20:59:19,545 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:19,545 INFO L82 PathProgramCache]: Analyzing trace with hash -799756421, now seen corresponding path program 268 times [2021-06-05 20:59:19,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:19,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367913760] [2021-06-05 20:59:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:19,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:19,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367913760] [2021-06-05 20:59:19,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367913760] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:19,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:19,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:19,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294909806] [2021-06-05 20:59:19,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:19,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:19,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:19,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:19,631 INFO L87 Difference]: Start difference. First operand 1841 states and 7439 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:19,691 INFO L93 Difference]: Finished difference Result 4150 states and 15816 transitions. [2021-06-05 20:59:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:19,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:19,699 INFO L225 Difference]: With dead ends: 4150 [2021-06-05 20:59:19,699 INFO L226 Difference]: Without dead ends: 3837 [2021-06-05 20:59:19,699 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2021-06-05 20:59:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 1813. [2021-06-05 20:59:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.049116997792495) internal successors, (7337), 1812 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7337 transitions. [2021-06-05 20:59:19,747 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7337 transitions. Word has length 25 [2021-06-05 20:59:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:19,747 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7337 transitions. [2021-06-05 20:59:19,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7337 transitions. [2021-06-05 20:59:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:19,749 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:19,750 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:19,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 20:59:19,750 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:19,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1437919907, now seen corresponding path program 269 times [2021-06-05 20:59:19,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:19,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318217861] [2021-06-05 20:59:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:19,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:19,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318217861] [2021-06-05 20:59:19,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318217861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:19,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:19,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:19,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657655782] [2021-06-05 20:59:19,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:19,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:19,825 INFO L87 Difference]: Start difference. First operand 1813 states and 7337 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:19,882 INFO L93 Difference]: Finished difference Result 4272 states and 16295 transitions. [2021-06-05 20:59:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:19,882 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 [2021-06-05 20:59:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:19,890 INFO L225 Difference]: With dead ends: 4272 [2021-06-05 20:59:19,890 INFO L226 Difference]: Without dead ends: 3987 [2021-06-05 20:59:19,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-06-05 20:59:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 1892. [2021-06-05 20:59:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.021152829190904) internal successors, (7604), 1891 states have internal predecessors, (7604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7604 transitions. [2021-06-05 20:59:19,940 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7604 transitions. Word has length 25 [2021-06-05 20:59:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:19,940 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7604 transitions. [2021-06-05 20:59:19,940 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) [2021-06-05 20:59:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7604 transitions. [2021-06-05 20:59:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:19,942 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:19,942 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:19,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 20:59:19,942 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1139866949, now seen corresponding path program 270 times [2021-06-05 20:59:19,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:19,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387566819] [2021-06-05 20:59:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:20,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:20,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387566819] [2021-06-05 20:59:20,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387566819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:20,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:20,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:20,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988781803] [2021-06-05 20:59:20,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:20,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:20,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:20,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:20,025 INFO L87 Difference]: Start difference. First operand 1892 states and 7604 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:20,078 INFO L93 Difference]: Finished difference Result 4305 states and 16362 transitions. [2021-06-05 20:59:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:20,086 INFO L225 Difference]: With dead ends: 4305 [2021-06-05 20:59:20,086 INFO L226 Difference]: Without dead ends: 3878 [2021-06-05 20:59:20,086 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-06-05 20:59:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 1783. [2021-06-05 20:59:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.057239057239057) internal successors, (7230), 1782 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7230 transitions. [2021-06-05 20:59:20,134 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7230 transitions. Word has length 25 [2021-06-05 20:59:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:20,134 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7230 transitions. [2021-06-05 20:59:20,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7230 transitions. [2021-06-05 20:59:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:20,136 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:20,136 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:20,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 20:59:20,137 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:20,137 INFO L82 PathProgramCache]: Analyzing trace with hash -395277509, now seen corresponding path program 271 times [2021-06-05 20:59:20,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:20,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093158594] [2021-06-05 20:59:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:20,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:20,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093158594] [2021-06-05 20:59:20,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093158594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:20,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:20,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:20,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132586618] [2021-06-05 20:59:20,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:20,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:20,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:20,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:20,219 INFO L87 Difference]: Start difference. First operand 1783 states and 7230 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:20,268 INFO L93 Difference]: Finished difference Result 4054 states and 15469 transitions. [2021-06-05 20:59:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:20,276 INFO L225 Difference]: With dead ends: 4054 [2021-06-05 20:59:20,276 INFO L226 Difference]: Without dead ends: 3807 [2021-06-05 20:59:20,276 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2021-06-05 20:59:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 1847. [2021-06-05 20:59:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.04875406283857) internal successors, (7474), 1846 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7474 transitions. [2021-06-05 20:59:20,324 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7474 transitions. Word has length 25 [2021-06-05 20:59:20,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:20,324 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7474 transitions. [2021-06-05 20:59:20,324 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) [2021-06-05 20:59:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7474 transitions. [2021-06-05 20:59:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:20,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:20,327 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:20,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 20:59:20,327 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2027224675, now seen corresponding path program 272 times [2021-06-05 20:59:20,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:20,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435225723] [2021-06-05 20:59:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:20,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:20,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435225723] [2021-06-05 20:59:20,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435225723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:20,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:20,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:20,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616056233] [2021-06-05 20:59:20,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:20,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:20,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:20,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:20,412 INFO L87 Difference]: Start difference. First operand 1847 states and 7474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:20,462 INFO L93 Difference]: Finished difference Result 4125 states and 15708 transitions. [2021-06-05 20:59:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:20,470 INFO L225 Difference]: With dead ends: 4125 [2021-06-05 20:59:20,470 INFO L226 Difference]: Without dead ends: 3763 [2021-06-05 20:59:20,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-05 20:59:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 1803. [2021-06-05 20:59:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.052164261931187) internal successors, (7302), 1802 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7302 transitions. [2021-06-05 20:59:20,527 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7302 transitions. Word has length 25 [2021-06-05 20:59:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:20,527 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7302 transitions. [2021-06-05 20:59:20,527 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) [2021-06-05 20:59:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7302 transitions. [2021-06-05 20:59:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:20,529 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:20,530 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:20,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 20:59:20,530 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:20,530 INFO L82 PathProgramCache]: Analyzing trace with hash -639126789, now seen corresponding path program 273 times [2021-06-05 20:59:20,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:20,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012647378] [2021-06-05 20:59:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:20,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:20,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012647378] [2021-06-05 20:59:20,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012647378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:20,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:20,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:20,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471735870] [2021-06-05 20:59:20,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:20,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:20,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:20,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:20,615 INFO L87 Difference]: Start difference. First operand 1803 states and 7302 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:20,663 INFO L93 Difference]: Finished difference Result 3923 states and 14970 transitions. [2021-06-05 20:59:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:20,663 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 [2021-06-05 20:59:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:20,671 INFO L225 Difference]: With dead ends: 3923 [2021-06-05 20:59:20,671 INFO L226 Difference]: Without dead ends: 3676 [2021-06-05 20:59:20,671 INFO L810 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 [2021-06-05 20:59:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2021-06-05 20:59:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 1827. [2021-06-05 20:59:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 4.04052573932092) internal successors, (7378), 1826 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 7378 transitions. [2021-06-05 20:59:20,717 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 7378 transitions. Word has length 25 [2021-06-05 20:59:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:20,717 INFO L482 AbstractCegarLoop]: Abstraction has 1827 states and 7378 transitions. [2021-06-05 20:59:20,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 7378 transitions. [2021-06-05 20:59:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:20,720 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:20,720 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:20,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 20:59:20,720 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2128924381, now seen corresponding path program 274 times [2021-06-05 20:59:20,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:20,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120627818] [2021-06-05 20:59:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:20,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:20,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120627818] [2021-06-05 20:59:20,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120627818] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:20,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:20,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:20,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473324534] [2021-06-05 20:59:20,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:20,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:20,796 INFO L87 Difference]: Start difference. First operand 1827 states and 7378 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:20,855 INFO L93 Difference]: Finished difference Result 3747 states and 14393 transitions. [2021-06-05 20:59:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:20,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:20,862 INFO L225 Difference]: With dead ends: 3747 [2021-06-05 20:59:20,862 INFO L226 Difference]: Without dead ends: 3460 [2021-06-05 20:59:20,862 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-06-05 20:59:20,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 1803. [2021-06-05 20:59:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.04550499445061) internal successors, (7290), 1802 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7290 transitions. [2021-06-05 20:59:20,907 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7290 transitions. Word has length 25 [2021-06-05 20:59:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:20,907 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7290 transitions. [2021-06-05 20:59:20,907 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) [2021-06-05 20:59:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7290 transitions. [2021-06-05 20:59:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:20,910 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:20,910 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:20,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 20:59:20,910 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:20,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1490760895, now seen corresponding path program 275 times [2021-06-05 20:59:20,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:20,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233992485] [2021-06-05 20:59:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:20,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:20,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233992485] [2021-06-05 20:59:20,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233992485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:20,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:20,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:20,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853646721] [2021-06-05 20:59:20,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:20,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:20,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:20,991 INFO L87 Difference]: Start difference. First operand 1803 states and 7290 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:21,048 INFO L93 Difference]: Finished difference Result 4094 states and 15621 transitions. [2021-06-05 20:59:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:21,056 INFO L225 Difference]: With dead ends: 4094 [2021-06-05 20:59:21,056 INFO L226 Difference]: Without dead ends: 3831 [2021-06-05 20:59:21,057 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2021-06-05 20:59:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 1855. [2021-06-05 20:59:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.031283710895361) internal successors, (7474), 1854 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7474 transitions. [2021-06-05 20:59:21,104 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7474 transitions. Word has length 25 [2021-06-05 20:59:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:21,104 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7474 transitions. [2021-06-05 20:59:21,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7474 transitions. [2021-06-05 20:59:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:21,107 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:21,107 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:21,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 20:59:21,107 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:21,107 INFO L82 PathProgramCache]: Analyzing trace with hash -164763491, now seen corresponding path program 276 times [2021-06-05 20:59:21,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:21,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961828139] [2021-06-05 20:59:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:21,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:21,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961828139] [2021-06-05 20:59:21,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961828139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:21,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:21,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:21,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151022483] [2021-06-05 20:59:21,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:21,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:21,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:21,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:21,195 INFO L87 Difference]: Start difference. First operand 1855 states and 7474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:21,247 INFO L93 Difference]: Finished difference Result 4022 states and 15309 transitions. [2021-06-05 20:59:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:21,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:21,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:21,255 INFO L225 Difference]: With dead ends: 4022 [2021-06-05 20:59:21,255 INFO L226 Difference]: Without dead ends: 3632 [2021-06-05 20:59:21,255 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2021-06-05 20:59:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 1783. [2021-06-05 20:59:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.051627384960718) internal successors, (7220), 1782 states have internal predecessors, (7220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7220 transitions. [2021-06-05 20:59:21,301 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7220 transitions. Word has length 25 [2021-06-05 20:59:21,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:21,301 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7220 transitions. [2021-06-05 20:59:21,301 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) [2021-06-05 20:59:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7220 transitions. [2021-06-05 20:59:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:21,304 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:21,304 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:21,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 20:59:21,304 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:21,304 INFO L82 PathProgramCache]: Analyzing trace with hash -456500583, now seen corresponding path program 277 times [2021-06-05 20:59:21,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:21,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562790800] [2021-06-05 20:59:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:21,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:21,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562790800] [2021-06-05 20:59:21,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562790800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:21,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:21,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:21,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377271486] [2021-06-05 20:59:21,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:21,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:21,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:21,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:21,386 INFO L87 Difference]: Start difference. First operand 1783 states and 7220 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:21,435 INFO L93 Difference]: Finished difference Result 3948 states and 15067 transitions. [2021-06-05 20:59:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:21,443 INFO L225 Difference]: With dead ends: 3948 [2021-06-05 20:59:21,443 INFO L226 Difference]: Without dead ends: 3701 [2021-06-05 20:59:21,443 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-06-05 20:59:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 1823. [2021-06-05 20:59:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.041712403951702) internal successors, (7364), 1822 states have internal predecessors, (7364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7364 transitions. [2021-06-05 20:59:21,491 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7364 transitions. Word has length 25 [2021-06-05 20:59:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:21,492 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7364 transitions. [2021-06-05 20:59:21,492 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) [2021-06-05 20:59:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7364 transitions. [2021-06-05 20:59:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:21,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:21,494 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:21,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 20:59:21,494 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:21,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2046435333, now seen corresponding path program 278 times [2021-06-05 20:59:21,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:21,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462768414] [2021-06-05 20:59:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:21,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:21,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462768414] [2021-06-05 20:59:21,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462768414] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:21,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:21,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:21,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164616289] [2021-06-05 20:59:21,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:21,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:21,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:21,577 INFO L87 Difference]: Start difference. First operand 1823 states and 7364 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:21,641 INFO L93 Difference]: Finished difference Result 3986 states and 15192 transitions. [2021-06-05 20:59:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:21,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:21,649 INFO L225 Difference]: With dead ends: 3986 [2021-06-05 20:59:21,649 INFO L226 Difference]: Without dead ends: 3673 [2021-06-05 20:59:21,649 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2021-06-05 20:59:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 1795. [2021-06-05 20:59:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.0490523968784835) internal successors, (7264), 1794 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7264 transitions. [2021-06-05 20:59:21,695 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7264 transitions. Word has length 25 [2021-06-05 20:59:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:21,695 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7264 transitions. [2021-06-05 20:59:21,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7264 transitions. [2021-06-05 20:59:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:21,698 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:21,698 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:21,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 20:59:21,698 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:21,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1951179141, now seen corresponding path program 279 times [2021-06-05 20:59:21,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:21,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529181164] [2021-06-05 20:59:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:21,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:21,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529181164] [2021-06-05 20:59:21,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529181164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:21,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:21,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:21,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406548652] [2021-06-05 20:59:21,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:21,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:21,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:21,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:21,776 INFO L87 Difference]: Start difference. First operand 1795 states and 7264 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:21,823 INFO L93 Difference]: Finished difference Result 3866 states and 14754 transitions. [2021-06-05 20:59:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:21,830 INFO L225 Difference]: With dead ends: 3866 [2021-06-05 20:59:21,830 INFO L226 Difference]: Without dead ends: 3619 [2021-06-05 20:59:21,830 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2021-06-05 20:59:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 1819. [2021-06-05 20:59:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 4.037403740374037) internal successors, (7340), 1818 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7340 transitions. [2021-06-05 20:59:21,876 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7340 transitions. Word has length 25 [2021-06-05 20:59:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:21,876 INFO L482 AbstractCegarLoop]: Abstraction has 1819 states and 7340 transitions. [2021-06-05 20:59:21,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7340 transitions. [2021-06-05 20:59:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:21,879 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:21,879 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:21,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 20:59:21,879 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash 401516155, now seen corresponding path program 280 times [2021-06-05 20:59:21,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:21,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786786995] [2021-06-05 20:59:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:21,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:21,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786786995] [2021-06-05 20:59:21,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786786995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:21,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:21,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:21,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992345013] [2021-06-05 20:59:21,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:21,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:21,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:21,972 INFO L87 Difference]: Start difference. First operand 1819 states and 7340 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:22,033 INFO L93 Difference]: Finished difference Result 3690 states and 14177 transitions. [2021-06-05 20:59:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:22,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:22,040 INFO L225 Difference]: With dead ends: 3690 [2021-06-05 20:59:22,040 INFO L226 Difference]: Without dead ends: 3403 [2021-06-05 20:59:22,040 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2021-06-05 20:59:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 1795. [2021-06-05 20:59:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.042363433667782) internal successors, (7252), 1794 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7252 transitions. [2021-06-05 20:59:22,085 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7252 transitions. Word has length 25 [2021-06-05 20:59:22,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:22,085 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7252 transitions. [2021-06-05 20:59:22,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7252 transitions. [2021-06-05 20:59:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:22,087 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:22,087 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:22,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 20:59:22,087 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash -534017187, now seen corresponding path program 281 times [2021-06-05 20:59:22,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:22,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261970534] [2021-06-05 20:59:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:22,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:22,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261970534] [2021-06-05 20:59:22,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261970534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:22,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:22,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:22,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398821747] [2021-06-05 20:59:22,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:22,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:22,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:22,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:22,172 INFO L87 Difference]: Start difference. First operand 1795 states and 7252 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:22,230 INFO L93 Difference]: Finished difference Result 3916 states and 14951 transitions. [2021-06-05 20:59:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:22,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:22,238 INFO L225 Difference]: With dead ends: 3916 [2021-06-05 20:59:22,238 INFO L226 Difference]: Without dead ends: 3631 [2021-06-05 20:59:22,238 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-06-05 20:59:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 1831. [2021-06-05 20:59:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 4.028415300546448) internal successors, (7372), 1830 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 7372 transitions. [2021-06-05 20:59:22,288 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 7372 transitions. Word has length 25 [2021-06-05 20:59:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:22,288 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 7372 transitions. [2021-06-05 20:59:22,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 7372 transitions. [2021-06-05 20:59:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:22,291 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:22,291 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:22,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 20:59:22,291 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:22,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1274969285, now seen corresponding path program 282 times [2021-06-05 20:59:22,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:22,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183238569] [2021-06-05 20:59:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:22,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:22,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183238569] [2021-06-05 20:59:22,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183238569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:22,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:22,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:22,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159056240] [2021-06-05 20:59:22,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:22,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:22,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:22,389 INFO L87 Difference]: Start difference. First operand 1831 states and 7372 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:22,447 INFO L93 Difference]: Finished difference Result 3702 states and 14209 transitions. [2021-06-05 20:59:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:22,454 INFO L225 Difference]: With dead ends: 3702 [2021-06-05 20:59:22,454 INFO L226 Difference]: Without dead ends: 3391 [2021-06-05 20:59:22,454 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2021-06-05 20:59:22,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 1783. [2021-06-05 20:59:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.048260381593715) internal successors, (7214), 1782 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7214 transitions. [2021-06-05 20:59:22,499 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7214 transitions. Word has length 25 [2021-06-05 20:59:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:22,499 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7214 transitions. [2021-06-05 20:59:22,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7214 transitions. [2021-06-05 20:59:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:22,502 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:22,502 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:22,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 20:59:22,502 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash 371196095, now seen corresponding path program 283 times [2021-06-05 20:59:22,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:22,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797793637] [2021-06-05 20:59:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:22,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:22,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797793637] [2021-06-05 20:59:22,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797793637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:22,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:22,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:22,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754780744] [2021-06-05 20:59:22,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:22,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:22,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:22,585 INFO L87 Difference]: Start difference. First operand 1783 states and 7214 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:22,643 INFO L93 Difference]: Finished difference Result 4210 states and 16122 transitions. [2021-06-05 20:59:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:22,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:22,651 INFO L225 Difference]: With dead ends: 4210 [2021-06-05 20:59:22,651 INFO L226 Difference]: Without dead ends: 3925 [2021-06-05 20:59:22,651 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2021-06-05 20:59:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 1853. [2021-06-05 20:59:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.041576673866091) internal successors, (7485), 1852 states have internal predecessors, (7485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7485 transitions. [2021-06-05 20:59:22,699 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7485 transitions. Word has length 25 [2021-06-05 20:59:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:22,700 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7485 transitions. [2021-06-05 20:59:22,700 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) [2021-06-05 20:59:22,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7485 transitions. [2021-06-05 20:59:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:22,702 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:22,702 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:22,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 20:59:22,702 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:22,702 INFO L82 PathProgramCache]: Analyzing trace with hash -369756003, now seen corresponding path program 284 times [2021-06-05 20:59:22,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:22,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576027293] [2021-06-05 20:59:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:22,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:22,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576027293] [2021-06-05 20:59:22,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576027293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:22,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:22,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:22,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794001521] [2021-06-05 20:59:22,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:22,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:22,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:22,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:22,786 INFO L87 Difference]: Start difference. First operand 1853 states and 7485 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:22,847 INFO L93 Difference]: Finished difference Result 4188 states and 16005 transitions. [2021-06-05 20:59:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:22,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:22,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:22,855 INFO L225 Difference]: With dead ends: 4188 [2021-06-05 20:59:22,855 INFO L226 Difference]: Without dead ends: 3889 [2021-06-05 20:59:22,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2021-06-05 20:59:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 1817. [2021-06-05 20:59:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.045704845814978) internal successors, (7347), 1816 states have internal predecessors, (7347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7347 transitions. [2021-06-05 20:59:22,903 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7347 transitions. Word has length 25 [2021-06-05 20:59:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:22,903 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7347 transitions. [2021-06-05 20:59:22,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7347 transitions. [2021-06-05 20:59:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:22,905 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:22,905 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:22,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 20:59:22,905 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:22,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1449839331, now seen corresponding path program 285 times [2021-06-05 20:59:22,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:22,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281906967] [2021-06-05 20:59:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:22,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:22,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281906967] [2021-06-05 20:59:22,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281906967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:22,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:22,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:22,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005353495] [2021-06-05 20:59:22,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:22,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:22,988 INFO L87 Difference]: Start difference. First operand 1817 states and 7347 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:23,059 INFO L93 Difference]: Finished difference Result 4229 states and 16143 transitions. [2021-06-05 20:59:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:23,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:23,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:23,068 INFO L225 Difference]: With dead ends: 4229 [2021-06-05 20:59:23,068 INFO L226 Difference]: Without dead ends: 3944 [2021-06-05 20:59:23,068 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2021-06-05 20:59:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 1896. [2021-06-05 20:59:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.017941952506597) internal successors, (7614), 1895 states have internal predecessors, (7614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7614 transitions. [2021-06-05 20:59:23,120 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7614 transitions. Word has length 25 [2021-06-05 20:59:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:23,120 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7614 transitions. [2021-06-05 20:59:23,120 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) [2021-06-05 20:59:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7614 transitions. [2021-06-05 20:59:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:23,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:23,123 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:23,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 20:59:23,123 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash 570113565, now seen corresponding path program 286 times [2021-06-05 20:59:23,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:23,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558383254] [2021-06-05 20:59:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:23,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:23,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558383254] [2021-06-05 20:59:23,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558383254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:23,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:23,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:23,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542703941] [2021-06-05 20:59:23,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:23,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:23,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:23,208 INFO L87 Difference]: Start difference. First operand 1896 states and 7614 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:23,263 INFO L93 Difference]: Finished difference Result 4262 states and 16210 transitions. [2021-06-05 20:59:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:23,271 INFO L225 Difference]: With dead ends: 4262 [2021-06-05 20:59:23,271 INFO L226 Difference]: Without dead ends: 3865 [2021-06-05 20:59:23,271 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-05 20:59:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 1817. [2021-06-05 20:59:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.026982378854625) internal successors, (7313), 1816 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7313 transitions. [2021-06-05 20:59:23,318 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7313 transitions. Word has length 25 [2021-06-05 20:59:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:23,318 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7313 transitions. [2021-06-05 20:59:23,318 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) [2021-06-05 20:59:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7313 transitions. [2021-06-05 20:59:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:23,321 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:23,321 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:23,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 20:59:23,321 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1703672197, now seen corresponding path program 287 times [2021-06-05 20:59:23,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:23,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159402316] [2021-06-05 20:59:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:23,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:23,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159402316] [2021-06-05 20:59:23,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159402316] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:23,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:23,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:23,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507594768] [2021-06-05 20:59:23,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:23,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:23,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:23,403 INFO L87 Difference]: Start difference. First operand 1817 states and 7313 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:23,461 INFO L93 Difference]: Finished difference Result 4158 states and 15853 transitions. [2021-06-05 20:59:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:23,469 INFO L225 Difference]: With dead ends: 4158 [2021-06-05 20:59:23,470 INFO L226 Difference]: Without dead ends: 3895 [2021-06-05 20:59:23,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2021-06-05 20:59:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 1869. [2021-06-05 20:59:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 4.013383297644539) internal successors, (7497), 1868 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 7497 transitions. [2021-06-05 20:59:23,517 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 7497 transitions. Word has length 25 [2021-06-05 20:59:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:23,517 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 7497 transitions. [2021-06-05 20:59:23,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 7497 transitions. [2021-06-05 20:59:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:23,520 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:23,520 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:23,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 20:59:23,520 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1485320611, now seen corresponding path program 288 times [2021-06-05 20:59:23,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:23,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146686599] [2021-06-05 20:59:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:23,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:23,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146686599] [2021-06-05 20:59:23,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146686599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:23,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:23,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:23,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318370258] [2021-06-05 20:59:23,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:23,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:23,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:23,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:23,604 INFO L87 Difference]: Start difference. First operand 1869 states and 7497 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:23,656 INFO L93 Difference]: Finished difference Result 4086 states and 15541 transitions. [2021-06-05 20:59:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:23,664 INFO L225 Difference]: With dead ends: 4086 [2021-06-05 20:59:23,664 INFO L226 Difference]: Without dead ends: 3668 [2021-06-05 20:59:23,664 INFO L810 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 [2021-06-05 20:59:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2021-06-05 20:59:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 1769. [2021-06-05 20:59:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.055995475113122) internal successors, (7171), 1768 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7171 transitions. [2021-06-05 20:59:23,710 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7171 transitions. Word has length 25 [2021-06-05 20:59:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:23,710 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7171 transitions. [2021-06-05 20:59:23,710 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) [2021-06-05 20:59:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7171 transitions. [2021-06-05 20:59:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:23,712 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:23,712 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:23,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 20:59:23,712 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1400654759, now seen corresponding path program 289 times [2021-06-05 20:59:23,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:23,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607590110] [2021-06-05 20:59:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:23,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:23,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607590110] [2021-06-05 20:59:23,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607590110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:23,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:23,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:23,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124915900] [2021-06-05 20:59:23,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:23,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:23,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:23,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:23,798 INFO L87 Difference]: Start difference. First operand 1769 states and 7171 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:23,846 INFO L93 Difference]: Finished difference Result 3897 states and 14808 transitions. [2021-06-05 20:59:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:23,854 INFO L225 Difference]: With dead ends: 3897 [2021-06-05 20:59:23,854 INFO L226 Difference]: Without dead ends: 3650 [2021-06-05 20:59:23,854 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2021-06-05 20:59:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 1837. [2021-06-05 20:59:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 4.049564270152506) internal successors, (7435), 1836 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 7435 transitions. [2021-06-05 20:59:23,900 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 7435 transitions. Word has length 25 [2021-06-05 20:59:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:23,900 INFO L482 AbstractCegarLoop]: Abstraction has 1837 states and 7435 transitions. [2021-06-05 20:59:23,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 7435 transitions. [2021-06-05 20:59:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:23,903 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:23,903 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:23,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 20:59:23,903 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:23,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:23,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1262365371, now seen corresponding path program 290 times [2021-06-05 20:59:23,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:23,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349238138] [2021-06-05 20:59:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:23,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:23,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349238138] [2021-06-05 20:59:23,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349238138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:23,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:23,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:23,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246267532] [2021-06-05 20:59:23,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:23,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:23,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:23,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:23,983 INFO L87 Difference]: Start difference. First operand 1837 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:24,036 INFO L93 Difference]: Finished difference Result 3968 states and 15047 transitions. [2021-06-05 20:59:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:24,043 INFO L225 Difference]: With dead ends: 3968 [2021-06-05 20:59:24,043 INFO L226 Difference]: Without dead ends: 3606 [2021-06-05 20:59:24,043 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-06-05 20:59:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 1793. [2021-06-05 20:59:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 4.055245535714286) internal successors, (7267), 1792 states have internal predecessors, (7267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 7267 transitions. [2021-06-05 20:59:24,089 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 7267 transitions. Word has length 25 [2021-06-05 20:59:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:24,089 INFO L482 AbstractCegarLoop]: Abstraction has 1793 states and 7267 transitions. [2021-06-05 20:59:24,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 7267 transitions. [2021-06-05 20:59:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:24,091 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:24,092 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:24,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 20:59:24,092 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:24,092 INFO L82 PathProgramCache]: Analyzing trace with hash 954514457, now seen corresponding path program 291 times [2021-06-05 20:59:24,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:24,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782290747] [2021-06-05 20:59:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:24,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:24,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782290747] [2021-06-05 20:59:24,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782290747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:24,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:24,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:24,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167541682] [2021-06-05 20:59:24,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:24,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:24,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:24,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:24,169 INFO L87 Difference]: Start difference. First operand 1793 states and 7267 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:24,218 INFO L93 Difference]: Finished difference Result 3798 states and 14409 transitions. [2021-06-05 20:59:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:24,225 INFO L225 Difference]: With dead ends: 3798 [2021-06-05 20:59:24,225 INFO L226 Difference]: Without dead ends: 3551 [2021-06-05 20:59:24,226 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-06-05 20:59:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 1809. [2021-06-05 20:59:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.0459070796460175) internal successors, (7315), 1808 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7315 transitions. [2021-06-05 20:59:24,281 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7315 transitions. Word has length 25 [2021-06-05 20:59:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:24,281 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7315 transitions. [2021-06-05 20:59:24,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7315 transitions. [2021-06-05 20:59:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:24,283 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:24,284 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:24,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 20:59:24,284 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:24,284 INFO L82 PathProgramCache]: Analyzing trace with hash -593407877, now seen corresponding path program 292 times [2021-06-05 20:59:24,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:24,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629295009] [2021-06-05 20:59:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:24,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:24,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629295009] [2021-06-05 20:59:24,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629295009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:24,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:24,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:24,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345153177] [2021-06-05 20:59:24,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:24,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:24,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:24,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:24,356 INFO L87 Difference]: Start difference. First operand 1809 states and 7315 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:24,417 INFO L93 Difference]: Finished difference Result 3798 states and 14393 transitions. [2021-06-05 20:59:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:24,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:24,425 INFO L225 Difference]: With dead ends: 3798 [2021-06-05 20:59:24,425 INFO L226 Difference]: Without dead ends: 3535 [2021-06-05 20:59:24,425 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-06-05 20:59:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 1793. [2021-06-05 20:59:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 4.05078125) internal successors, (7259), 1792 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 7259 transitions. [2021-06-05 20:59:24,470 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 7259 transitions. Word has length 25 [2021-06-05 20:59:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:24,470 INFO L482 AbstractCegarLoop]: Abstraction has 1793 states and 7259 transitions. [2021-06-05 20:59:24,470 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) [2021-06-05 20:59:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 7259 transitions. [2021-06-05 20:59:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:24,473 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:24,473 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:24,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 20:59:24,473 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1231571363, now seen corresponding path program 293 times [2021-06-05 20:59:24,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:24,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284189452] [2021-06-05 20:59:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:24,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:24,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284189452] [2021-06-05 20:59:24,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284189452] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:24,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:24,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:24,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114251261] [2021-06-05 20:59:24,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:24,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:24,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:24,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:24,554 INFO L87 Difference]: Start difference. First operand 1793 states and 7259 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:24,610 INFO L93 Difference]: Finished difference Result 3897 states and 14784 transitions. [2021-06-05 20:59:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:24,618 INFO L225 Difference]: With dead ends: 3897 [2021-06-05 20:59:24,618 INFO L226 Difference]: Without dead ends: 3650 [2021-06-05 20:59:24,618 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2021-06-05 20:59:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 1837. [2021-06-05 20:59:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 4.036492374727668) internal successors, (7411), 1836 states have internal predecessors, (7411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 7411 transitions. [2021-06-05 20:59:24,664 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 7411 transitions. Word has length 25 [2021-06-05 20:59:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:24,664 INFO L482 AbstractCegarLoop]: Abstraction has 1837 states and 7411 transitions. [2021-06-05 20:59:24,664 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) [2021-06-05 20:59:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 7411 transitions. [2021-06-05 20:59:24,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:24,666 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:24,666 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:24,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 20:59:24,667 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:24,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:24,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2059063995, now seen corresponding path program 294 times [2021-06-05 20:59:24,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:24,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021535427] [2021-06-05 20:59:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:24,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:24,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021535427] [2021-06-05 20:59:24,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021535427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:24,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:24,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:24,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508436285] [2021-06-05 20:59:24,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:24,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:24,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:24,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:24,747 INFO L87 Difference]: Start difference. First operand 1837 states and 7411 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:24,794 INFO L93 Difference]: Finished difference Result 3968 states and 15023 transitions. [2021-06-05 20:59:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:24,801 INFO L225 Difference]: With dead ends: 3968 [2021-06-05 20:59:24,802 INFO L226 Difference]: Without dead ends: 3590 [2021-06-05 20:59:24,802 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2021-06-05 20:59:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 1777. [2021-06-05 20:59:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.055743243243243) internal successors, (7203), 1776 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7203 transitions. [2021-06-05 20:59:24,848 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7203 transitions. Word has length 25 [2021-06-05 20:59:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:24,848 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7203 transitions. [2021-06-05 20:59:24,848 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) [2021-06-05 20:59:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7203 transitions. [2021-06-05 20:59:24,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:24,850 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:24,850 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:24,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 20:59:24,850 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash 308947003, now seen corresponding path program 295 times [2021-06-05 20:59:24,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:24,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636069653] [2021-06-05 20:59:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:24,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:24,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636069653] [2021-06-05 20:59:24,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636069653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:24,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:24,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:24,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704730081] [2021-06-05 20:59:24,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:24,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:24,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:24,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:24,932 INFO L87 Difference]: Start difference. First operand 1777 states and 7203 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:24,985 INFO L93 Difference]: Finished difference Result 3869 states and 14696 transitions. [2021-06-05 20:59:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:24,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:24,992 INFO L225 Difference]: With dead ends: 3869 [2021-06-05 20:59:24,992 INFO L226 Difference]: Without dead ends: 3622 [2021-06-05 20:59:24,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:25,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-06-05 20:59:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 1841. [2021-06-05 20:59:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.047282608695652) internal successors, (7447), 1840 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7447 transitions. [2021-06-05 20:59:25,039 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7447 transitions. Word has length 25 [2021-06-05 20:59:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:25,039 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7447 transitions. [2021-06-05 20:59:25,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7447 transitions. [2021-06-05 20:59:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:25,041 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:25,041 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:25,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 20:59:25,042 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1323000163, now seen corresponding path program 296 times [2021-06-05 20:59:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:25,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372764303] [2021-06-05 20:59:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:25,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:25,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372764303] [2021-06-05 20:59:25,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372764303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:25,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:25,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:25,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167432527] [2021-06-05 20:59:25,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:25,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:25,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:25,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:25,122 INFO L87 Difference]: Start difference. First operand 1841 states and 7447 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:25,181 INFO L93 Difference]: Finished difference Result 3940 states and 14935 transitions. [2021-06-05 20:59:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:25,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:25,188 INFO L225 Difference]: With dead ends: 3940 [2021-06-05 20:59:25,188 INFO L226 Difference]: Without dead ends: 3578 [2021-06-05 20:59:25,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-06-05 20:59:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 1797. [2021-06-05 20:59:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.0506681514476615) internal successors, (7275), 1796 states have internal predecessors, (7275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7275 transitions. [2021-06-05 20:59:25,234 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7275 transitions. Word has length 25 [2021-06-05 20:59:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:25,234 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7275 transitions. [2021-06-05 20:59:25,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7275 transitions. [2021-06-05 20:59:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:25,237 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:25,237 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:25,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 20:59:25,237 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:25,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1962939367, now seen corresponding path program 297 times [2021-06-05 20:59:25,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:25,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166271731] [2021-06-05 20:59:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:25,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:25,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166271731] [2021-06-05 20:59:25,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166271731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:25,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:25,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:25,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108017072] [2021-06-05 20:59:25,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:25,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:25,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:25,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:25,312 INFO L87 Difference]: Start difference. First operand 1797 states and 7275 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:25,363 INFO L93 Difference]: Finished difference Result 3738 states and 14197 transitions. [2021-06-05 20:59:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:25,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:25,370 INFO L225 Difference]: With dead ends: 3738 [2021-06-05 20:59:25,370 INFO L226 Difference]: Without dead ends: 3491 [2021-06-05 20:59:25,370 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2021-06-05 20:59:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 1821. [2021-06-05 20:59:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.039010989010989) internal successors, (7351), 1820 states have internal predecessors, (7351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7351 transitions. [2021-06-05 20:59:25,415 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7351 transitions. Word has length 25 [2021-06-05 20:59:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:25,415 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7351 transitions. [2021-06-05 20:59:25,415 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) [2021-06-05 20:59:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7351 transitions. [2021-06-05 20:59:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:25,418 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:25,418 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:25,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 20:59:25,418 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:25,418 INFO L82 PathProgramCache]: Analyzing trace with hash 805111803, now seen corresponding path program 298 times [2021-06-05 20:59:25,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:25,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750173929] [2021-06-05 20:59:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:25,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:25,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750173929] [2021-06-05 20:59:25,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750173929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:25,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:25,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:25,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199375739] [2021-06-05 20:59:25,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:25,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:25,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:25,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:25,492 INFO L87 Difference]: Start difference. First operand 1821 states and 7351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:25,550 INFO L93 Difference]: Finished difference Result 3562 states and 13620 transitions. [2021-06-05 20:59:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:25,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:25,557 INFO L225 Difference]: With dead ends: 3562 [2021-06-05 20:59:25,557 INFO L226 Difference]: Without dead ends: 3275 [2021-06-05 20:59:25,557 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2021-06-05 20:59:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 1797. [2021-06-05 20:59:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.043986636971047) internal successors, (7263), 1796 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7263 transitions. [2021-06-05 20:59:25,601 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7263 transitions. Word has length 25 [2021-06-05 20:59:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:25,601 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7263 transitions. [2021-06-05 20:59:25,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7263 transitions. [2021-06-05 20:59:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:25,603 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:25,603 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:25,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 20:59:25,603 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash 166948317, now seen corresponding path program 299 times [2021-06-05 20:59:25,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:25,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486381628] [2021-06-05 20:59:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:25,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:25,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486381628] [2021-06-05 20:59:25,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486381628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:25,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:25,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:25,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577810841] [2021-06-05 20:59:25,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:25,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:25,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:25,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:25,685 INFO L87 Difference]: Start difference. First operand 1797 states and 7263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:25,747 INFO L93 Difference]: Finished difference Result 3909 states and 14848 transitions. [2021-06-05 20:59:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:25,747 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 [2021-06-05 20:59:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:25,755 INFO L225 Difference]: With dead ends: 3909 [2021-06-05 20:59:25,755 INFO L226 Difference]: Without dead ends: 3646 [2021-06-05 20:59:25,755 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2021-06-05 20:59:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 1849. [2021-06-05 20:59:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 4.029761904761905) internal successors, (7447), 1848 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 7447 transitions. [2021-06-05 20:59:25,802 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 7447 transitions. Word has length 25 [2021-06-05 20:59:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:25,802 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 7447 transitions. [2021-06-05 20:59:25,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 7447 transitions. [2021-06-05 20:59:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:25,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:25,804 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:25,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 20:59:25,804 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1488576069, now seen corresponding path program 300 times [2021-06-05 20:59:25,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:25,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469787794] [2021-06-05 20:59:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:25,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:25,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469787794] [2021-06-05 20:59:25,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469787794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:25,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:25,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:25,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383422828] [2021-06-05 20:59:25,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:25,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:25,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:25,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:25,886 INFO L87 Difference]: Start difference. First operand 1849 states and 7447 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:25,935 INFO L93 Difference]: Finished difference Result 3837 states and 14536 transitions. [2021-06-05 20:59:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:25,943 INFO L225 Difference]: With dead ends: 3837 [2021-06-05 20:59:25,943 INFO L226 Difference]: Without dead ends: 3447 [2021-06-05 20:59:25,943 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-06-05 20:59:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1777. [2021-06-05 20:59:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.051238738738738) internal successors, (7195), 1776 states have internal predecessors, (7195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7195 transitions. [2021-06-05 20:59:25,988 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7195 transitions. Word has length 25 [2021-06-05 20:59:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:25,988 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7195 transitions. [2021-06-05 20:59:25,988 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) [2021-06-05 20:59:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7195 transitions. [2021-06-05 20:59:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:25,991 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:25,991 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:25,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 20:59:25,991 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1456409639, now seen corresponding path program 301 times [2021-06-05 20:59:25,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:25,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471767542] [2021-06-05 20:59:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:26,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:26,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471767542] [2021-06-05 20:59:26,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471767542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:26,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:26,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:26,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689911646] [2021-06-05 20:59:26,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:26,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:26,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:26,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:26,061 INFO L87 Difference]: Start difference. First operand 1777 states and 7195 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:26,109 INFO L93 Difference]: Finished difference Result 3603 states and 13658 transitions. [2021-06-05 20:59:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:26,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:26,115 INFO L225 Difference]: With dead ends: 3603 [2021-06-05 20:59:26,115 INFO L226 Difference]: Without dead ends: 3356 [2021-06-05 20:59:26,116 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2021-06-05 20:59:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 1801. [2021-06-05 20:59:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 4.043888888888889) internal successors, (7279), 1800 states have internal predecessors, (7279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 7279 transitions. [2021-06-05 20:59:26,167 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 7279 transitions. Word has length 25 [2021-06-05 20:59:26,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:26,168 INFO L482 AbstractCegarLoop]: Abstraction has 1801 states and 7279 transitions. [2021-06-05 20:59:26,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 7279 transitions. [2021-06-05 20:59:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:26,170 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:26,170 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:26,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 20:59:26,170 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:26,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:26,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1290635323, now seen corresponding path program 302 times [2021-06-05 20:59:26,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:26,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470946134] [2021-06-05 20:59:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:26,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:26,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470946134] [2021-06-05 20:59:26,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470946134] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:26,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:26,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:26,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751062652] [2021-06-05 20:59:26,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:26,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:26,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:26,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:26,238 INFO L87 Difference]: Start difference. First operand 1801 states and 7279 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:26,298 INFO L93 Difference]: Finished difference Result 3603 states and 13642 transitions. [2021-06-05 20:59:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:26,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:26,305 INFO L225 Difference]: With dead ends: 3603 [2021-06-05 20:59:26,305 INFO L226 Difference]: Without dead ends: 3340 [2021-06-05 20:59:26,305 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-06-05 20:59:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 1785. [2021-06-05 20:59:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.048766816143497) internal successors, (7223), 1784 states have internal predecessors, (7223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7223 transitions. [2021-06-05 20:59:26,350 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7223 transitions. Word has length 25 [2021-06-05 20:59:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:26,350 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7223 transitions. [2021-06-05 20:59:26,350 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) [2021-06-05 20:59:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7223 transitions. [2021-06-05 20:59:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:26,352 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:26,352 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:26,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 20:59:26,352 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:26,352 INFO L82 PathProgramCache]: Analyzing trace with hash -375347013, now seen corresponding path program 303 times [2021-06-05 20:59:26,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:26,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382040982] [2021-06-05 20:59:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:26,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:26,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382040982] [2021-06-05 20:59:26,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382040982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:26,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:26,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:26,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070544489] [2021-06-05 20:59:26,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:26,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:26,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:26,440 INFO L87 Difference]: Start difference. First operand 1785 states and 7223 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:26,486 INFO L93 Difference]: Finished difference Result 3547 states and 13454 transitions. [2021-06-05 20:59:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:26,493 INFO L225 Difference]: With dead ends: 3547 [2021-06-05 20:59:26,493 INFO L226 Difference]: Without dead ends: 3300 [2021-06-05 20:59:26,493 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-06-05 20:59:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 1809. [2021-06-05 20:59:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.037057522123894) internal successors, (7299), 1808 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7299 transitions. [2021-06-05 20:59:26,537 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7299 transitions. Word has length 25 [2021-06-05 20:59:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:26,537 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7299 transitions. [2021-06-05 20:59:26,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7299 transitions. [2021-06-05 20:59:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:26,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:26,539 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:26,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 20:59:26,539 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:26,539 INFO L82 PathProgramCache]: Analyzing trace with hash 674963387, now seen corresponding path program 304 times [2021-06-05 20:59:26,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:26,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623229416] [2021-06-05 20:59:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:26,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:26,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623229416] [2021-06-05 20:59:26,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623229416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:26,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:26,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:26,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084344969] [2021-06-05 20:59:26,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:26,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:26,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:26,610 INFO L87 Difference]: Start difference. First operand 1809 states and 7299 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:26,669 INFO L93 Difference]: Finished difference Result 3371 states and 12877 transitions. [2021-06-05 20:59:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:26,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:26,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:26,676 INFO L225 Difference]: With dead ends: 3371 [2021-06-05 20:59:26,676 INFO L226 Difference]: Without dead ends: 3084 [2021-06-05 20:59:26,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-06-05 20:59:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 1785. [2021-06-05 20:59:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.0442825112107625) internal successors, (7215), 1784 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7215 transitions. [2021-06-05 20:59:26,718 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7215 transitions. Word has length 25 [2021-06-05 20:59:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:26,718 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7215 transitions. [2021-06-05 20:59:26,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7215 transitions. [2021-06-05 20:59:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:26,720 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:26,720 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:26,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 20:59:26,721 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:26,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1491913827, now seen corresponding path program 305 times [2021-06-05 20:59:26,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:26,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290222714] [2021-06-05 20:59:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:26,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:26,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290222714] [2021-06-05 20:59:26,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290222714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:26,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:26,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:26,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658416086] [2021-06-05 20:59:26,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:26,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:26,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:26,794 INFO L87 Difference]: Start difference. First operand 1785 states and 7215 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:26,852 INFO L93 Difference]: Finished difference Result 3355 states and 12821 transitions. [2021-06-05 20:59:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:26,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:26,859 INFO L225 Difference]: With dead ends: 3355 [2021-06-05 20:59:26,859 INFO L226 Difference]: Without dead ends: 3108 [2021-06-05 20:59:26,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:26,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-06-05 20:59:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 1809. [2021-06-05 20:59:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.032632743362832) internal successors, (7291), 1808 states have internal predecessors, (7291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7291 transitions. [2021-06-05 20:59:26,901 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7291 transitions. Word has length 25 [2021-06-05 20:59:26,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:26,901 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7291 transitions. [2021-06-05 20:59:26,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7291 transitions. [2021-06-05 20:59:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:26,904 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:26,904 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:26,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 20:59:26,904 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash 759716475, now seen corresponding path program 306 times [2021-06-05 20:59:26,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:26,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769731935] [2021-06-05 20:59:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:26,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:26,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769731935] [2021-06-05 20:59:26,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769731935] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:26,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:26,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:26,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083978395] [2021-06-05 20:59:26,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:26,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:26,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:26,971 INFO L87 Difference]: Start difference. First operand 1809 states and 7291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:27,033 INFO L93 Difference]: Finished difference Result 3107 states and 11968 transitions. [2021-06-05 20:59:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:27,039 INFO L225 Difference]: With dead ends: 3107 [2021-06-05 20:59:27,039 INFO L226 Difference]: Without dead ends: 2812 [2021-06-05 20:59:27,039 INFO L810 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 [2021-06-05 20:59:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-06-05 20:59:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1777. [2021-06-05 20:59:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.048986486486487) internal successors, (7191), 1776 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7191 transitions. [2021-06-05 20:59:27,080 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7191 transitions. Word has length 25 [2021-06-05 20:59:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:27,080 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7191 transitions. [2021-06-05 20:59:27,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7191 transitions. [2021-06-05 20:59:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:27,082 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:27,082 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:27,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 20:59:27,083 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:27,083 INFO L82 PathProgramCache]: Analyzing trace with hash -586700545, now seen corresponding path program 307 times [2021-06-05 20:59:27,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:27,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484273862] [2021-06-05 20:59:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:27,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:27,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484273862] [2021-06-05 20:59:27,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484273862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:27,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:27,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:27,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280233990] [2021-06-05 20:59:27,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:27,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:27,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:27,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:27,156 INFO L87 Difference]: Start difference. First operand 1777 states and 7191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:27,216 INFO L93 Difference]: Finished difference Result 3838 states and 14589 transitions. [2021-06-05 20:59:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:27,224 INFO L225 Difference]: With dead ends: 3838 [2021-06-05 20:59:27,224 INFO L226 Difference]: Without dead ends: 3591 [2021-06-05 20:59:27,224 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2021-06-05 20:59:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 1821. [2021-06-05 20:59:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.043406593406593) internal successors, (7359), 1820 states have internal predecessors, (7359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7359 transitions. [2021-06-05 20:59:27,270 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7359 transitions. Word has length 25 [2021-06-05 20:59:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:27,270 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7359 transitions. [2021-06-05 20:59:27,270 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) [2021-06-05 20:59:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7359 transitions. [2021-06-05 20:59:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:27,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:27,272 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:27,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 20:59:27,272 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:27,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1664929757, now seen corresponding path program 308 times [2021-06-05 20:59:27,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:27,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406607317] [2021-06-05 20:59:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:27,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:27,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406607317] [2021-06-05 20:59:27,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406607317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:27,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:27,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:27,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147777638] [2021-06-05 20:59:27,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:27,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:27,347 INFO L87 Difference]: Start difference. First operand 1821 states and 7359 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:27,428 INFO L93 Difference]: Finished difference Result 3854 states and 14637 transitions. [2021-06-05 20:59:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:27,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:27,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:27,435 INFO L225 Difference]: With dead ends: 3854 [2021-06-05 20:59:27,436 INFO L226 Difference]: Without dead ends: 3567 [2021-06-05 20:59:27,436 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2021-06-05 20:59:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 1797. [2021-06-05 20:59:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.048440979955457) internal successors, (7271), 1796 states have internal predecessors, (7271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7271 transitions. [2021-06-05 20:59:27,483 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7271 transitions. Word has length 25 [2021-06-05 20:59:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:27,483 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7271 transitions. [2021-06-05 20:59:27,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7271 transitions. [2021-06-05 20:59:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:27,486 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:27,486 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:27,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 20:59:27,486 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:27,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1887231325, now seen corresponding path program 309 times [2021-06-05 20:59:27,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:27,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042020608] [2021-06-05 20:59:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:27,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:27,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042020608] [2021-06-05 20:59:27,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042020608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:27,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:27,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:27,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671390988] [2021-06-05 20:59:27,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:27,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:27,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:27,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:27,569 INFO L87 Difference]: Start difference. First operand 1797 states and 7271 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:27,630 INFO L93 Difference]: Finished difference Result 3742 states and 14201 transitions. [2021-06-05 20:59:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:27,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:27,637 INFO L225 Difference]: With dead ends: 3742 [2021-06-05 20:59:27,638 INFO L226 Difference]: Without dead ends: 3495 [2021-06-05 20:59:27,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2021-06-05 20:59:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 1841. [2021-06-05 20:59:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.034239130434782) internal successors, (7423), 1840 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7423 transitions. [2021-06-05 20:59:27,686 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7423 transitions. Word has length 25 [2021-06-05 20:59:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:27,686 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7423 transitions. [2021-06-05 20:59:27,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7423 transitions. [2021-06-05 20:59:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:27,688 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:27,688 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:27,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 20:59:27,688 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1690167971, now seen corresponding path program 310 times [2021-06-05 20:59:27,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:27,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379662492] [2021-06-05 20:59:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:27,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:27,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379662492] [2021-06-05 20:59:27,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379662492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:27,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:27,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:27,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564356003] [2021-06-05 20:59:27,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:27,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:27,770 INFO L87 Difference]: Start difference. First operand 1841 states and 7423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:27,817 INFO L93 Difference]: Finished difference Result 3813 states and 14440 transitions. [2021-06-05 20:59:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:27,817 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 [2021-06-05 20:59:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:27,824 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 20:59:27,824 INFO L226 Difference]: Without dead ends: 3451 [2021-06-05 20:59:27,825 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2021-06-05 20:59:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 1797. [2021-06-05 20:59:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.037305122494432) internal successors, (7251), 1796 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7251 transitions. [2021-06-05 20:59:27,869 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7251 transitions. Word has length 25 [2021-06-05 20:59:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:27,869 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7251 transitions. [2021-06-05 20:59:27,869 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) [2021-06-05 20:59:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7251 transitions. [2021-06-05 20:59:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:27,871 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:27,871 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:27,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 20:59:27,871 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:27,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1425388357, now seen corresponding path program 311 times [2021-06-05 20:59:27,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:27,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500992559] [2021-06-05 20:59:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:27,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:27,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500992559] [2021-06-05 20:59:27,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500992559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:27,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:27,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:27,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820528940] [2021-06-05 20:59:27,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:27,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:27,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:27,953 INFO L87 Difference]: Start difference. First operand 1797 states and 7251 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:28,012 INFO L93 Difference]: Finished difference Result 3730 states and 14145 transitions. [2021-06-05 20:59:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:28,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:28,019 INFO L225 Difference]: With dead ends: 3730 [2021-06-05 20:59:28,020 INFO L226 Difference]: Without dead ends: 3467 [2021-06-05 20:59:28,020 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2021-06-05 20:59:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 1849. [2021-06-05 20:59:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 4.0232683982683985) internal successors, (7435), 1848 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 7435 transitions. [2021-06-05 20:59:28,073 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 7435 transitions. Word has length 25 [2021-06-05 20:59:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:28,073 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 7435 transitions. [2021-06-05 20:59:28,073 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) [2021-06-05 20:59:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 7435 transitions. [2021-06-05 20:59:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:28,075 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:28,075 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:28,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 20:59:28,075 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:28,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1207036771, now seen corresponding path program 312 times [2021-06-05 20:59:28,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:28,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564251464] [2021-06-05 20:59:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:28,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:28,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564251464] [2021-06-05 20:59:28,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564251464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:28,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:28,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:28,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913279490] [2021-06-05 20:59:28,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:28,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:28,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:28,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:28,156 INFO L87 Difference]: Start difference. First operand 1849 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:28,203 INFO L93 Difference]: Finished difference Result 3658 states and 13833 transitions. [2021-06-05 20:59:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:28,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:28,210 INFO L225 Difference]: With dead ends: 3658 [2021-06-05 20:59:28,210 INFO L226 Difference]: Without dead ends: 3260 [2021-06-05 20:59:28,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-06-05 20:59:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 1769. [2021-06-05 20:59:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.053733031674208) internal successors, (7167), 1768 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7167 transitions. [2021-06-05 20:59:28,253 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7167 transitions. Word has length 25 [2021-06-05 20:59:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:28,253 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7167 transitions. [2021-06-05 20:59:28,253 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) [2021-06-05 20:59:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7167 transitions. [2021-06-05 20:59:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:28,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:28,256 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:28,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 20:59:28,256 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:28,256 INFO L82 PathProgramCache]: Analyzing trace with hash -772928521, now seen corresponding path program 313 times [2021-06-05 20:59:28,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:28,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611050055] [2021-06-05 20:59:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:28,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:28,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611050055] [2021-06-05 20:59:28,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611050055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:28,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:28,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:28,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479752876] [2021-06-05 20:59:28,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:28,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:28,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:28,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:28,325 INFO L87 Difference]: Start difference. First operand 1769 states and 7167 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:28,375 INFO L93 Difference]: Finished difference Result 3690 states and 14014 transitions. [2021-06-05 20:59:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:28,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:28,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:28,382 INFO L225 Difference]: With dead ends: 3690 [2021-06-05 20:59:28,382 INFO L226 Difference]: Without dead ends: 3443 [2021-06-05 20:59:28,382 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2021-06-05 20:59:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1809. [2021-06-05 20:59:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.043694690265487) internal successors, (7311), 1808 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7311 transitions. [2021-06-05 20:59:28,428 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7311 transitions. Word has length 25 [2021-06-05 20:59:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:28,428 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7311 transitions. [2021-06-05 20:59:28,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7311 transitions. [2021-06-05 20:59:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:28,430 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:28,430 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:28,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 20:59:28,431 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1932104025, now seen corresponding path program 314 times [2021-06-05 20:59:28,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:28,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076893510] [2021-06-05 20:59:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:28,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:28,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076893510] [2021-06-05 20:59:28,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076893510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:28,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:28,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:28,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78643227] [2021-06-05 20:59:28,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:28,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:28,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:28,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:28,502 INFO L87 Difference]: Start difference. First operand 1809 states and 7311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:28,562 INFO L93 Difference]: Finished difference Result 3728 states and 14139 transitions. [2021-06-05 20:59:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:28,563 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 [2021-06-05 20:59:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:28,570 INFO L225 Difference]: With dead ends: 3728 [2021-06-05 20:59:28,570 INFO L226 Difference]: Without dead ends: 3415 [2021-06-05 20:59:28,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2021-06-05 20:59:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 1781. [2021-06-05 20:59:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.053370786516854) internal successors, (7215), 1780 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7215 transitions. [2021-06-05 20:59:28,617 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7215 transitions. Word has length 25 [2021-06-05 20:59:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:28,617 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7215 transitions. [2021-06-05 20:59:28,617 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) [2021-06-05 20:59:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7215 transitions. [2021-06-05 20:59:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:28,620 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:28,620 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:28,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 20:59:28,620 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:28,620 INFO L82 PathProgramCache]: Analyzing trace with hash -979736487, now seen corresponding path program 315 times [2021-06-05 20:59:28,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:28,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153283] [2021-06-05 20:59:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:28,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:28,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153283] [2021-06-05 20:59:28,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:28,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:28,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:28,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600813166] [2021-06-05 20:59:28,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:28,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:28,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:28,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:28,686 INFO L87 Difference]: Start difference. First operand 1781 states and 7215 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:28,735 INFO L93 Difference]: Finished difference Result 3640 states and 13801 transitions. [2021-06-05 20:59:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:28,742 INFO L225 Difference]: With dead ends: 3640 [2021-06-05 20:59:28,742 INFO L226 Difference]: Without dead ends: 3393 [2021-06-05 20:59:28,742 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2021-06-05 20:59:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 1797. [2021-06-05 20:59:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.043986636971047) internal successors, (7263), 1796 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7263 transitions. [2021-06-05 20:59:28,787 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7263 transitions. Word has length 25 [2021-06-05 20:59:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:28,787 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7263 transitions. [2021-06-05 20:59:28,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7263 transitions. [2021-06-05 20:59:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:28,789 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:28,789 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:28,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 20:59:28,790 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 700760153, now seen corresponding path program 316 times [2021-06-05 20:59:28,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:28,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581127490] [2021-06-05 20:59:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:28,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:28,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581127490] [2021-06-05 20:59:28,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581127490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:28,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:28,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:28,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237672496] [2021-06-05 20:59:28,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:28,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:28,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:28,853 INFO L87 Difference]: Start difference. First operand 1797 states and 7263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:28,913 INFO L93 Difference]: Finished difference Result 3640 states and 13785 transitions. [2021-06-05 20:59:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:28,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:28,920 INFO L225 Difference]: With dead ends: 3640 [2021-06-05 20:59:28,920 INFO L226 Difference]: Without dead ends: 3377 [2021-06-05 20:59:28,921 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-06-05 20:59:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 1781. [2021-06-05 20:59:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.048876404494382) internal successors, (7207), 1780 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7207 transitions. [2021-06-05 20:59:28,965 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7207 transitions. Word has length 25 [2021-06-05 20:59:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:28,965 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7207 transitions. [2021-06-05 20:59:28,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7207 transitions. [2021-06-05 20:59:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:28,967 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:28,967 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:28,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 20:59:28,967 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:28,967 INFO L82 PathProgramCache]: Analyzing trace with hash 437425467, now seen corresponding path program 317 times [2021-06-05 20:59:28,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:28,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033483423] [2021-06-05 20:59:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:29,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:29,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033483423] [2021-06-05 20:59:29,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033483423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:29,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:29,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:29,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430108896] [2021-06-05 20:59:29,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:29,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:29,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:29,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:29,031 INFO L87 Difference]: Start difference. First operand 1781 states and 7207 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:29,087 INFO L93 Difference]: Finished difference Result 3728 states and 14151 transitions. [2021-06-05 20:59:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:29,087 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 [2021-06-05 20:59:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:29,094 INFO L225 Difference]: With dead ends: 3728 [2021-06-05 20:59:29,094 INFO L226 Difference]: Without dead ends: 3443 [2021-06-05 20:59:29,094 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2021-06-05 20:59:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1809. [2021-06-05 20:59:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.034845132743363) internal successors, (7295), 1808 states have internal predecessors, (7295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7295 transitions. [2021-06-05 20:59:29,139 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7295 transitions. Word has length 25 [2021-06-05 20:59:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:29,139 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7295 transitions. [2021-06-05 20:59:29,139 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) [2021-06-05 20:59:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7295 transitions. [2021-06-05 20:59:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:29,142 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:29,142 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:29,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 20:59:29,142 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:29,142 INFO L82 PathProgramCache]: Analyzing trace with hash -954719079, now seen corresponding path program 318 times [2021-06-05 20:59:29,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:29,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45161638] [2021-06-05 20:59:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:29,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:29,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45161638] [2021-06-05 20:59:29,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45161638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:29,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:29,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:29,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435639276] [2021-06-05 20:59:29,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:29,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:29,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:29,205 INFO L87 Difference]: Start difference. First operand 1809 states and 7295 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:29,273 INFO L93 Difference]: Finished difference Result 3690 states and 13970 transitions. [2021-06-05 20:59:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:29,273 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 [2021-06-05 20:59:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:29,280 INFO L225 Difference]: With dead ends: 3690 [2021-06-05 20:59:29,280 INFO L226 Difference]: Without dead ends: 3407 [2021-06-05 20:59:29,280 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2021-06-05 20:59:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 1773. [2021-06-05 20:59:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.053611738148984) internal successors, (7183), 1772 states have internal predecessors, (7183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7183 transitions. [2021-06-05 20:59:29,324 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7183 transitions. Word has length 25 [2021-06-05 20:59:29,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:29,324 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7183 transitions. [2021-06-05 20:59:29,324 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) [2021-06-05 20:59:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7183 transitions. [2021-06-05 20:59:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:29,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:29,327 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:29,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 20:59:29,327 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:29,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1253830567, now seen corresponding path program 319 times [2021-06-05 20:59:29,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:29,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193526541] [2021-06-05 20:59:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:29,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:29,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193526541] [2021-06-05 20:59:29,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193526541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:29,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:29,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:29,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164264406] [2021-06-05 20:59:29,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:29,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:29,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:29,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:29,410 INFO L87 Difference]: Start difference. First operand 1773 states and 7183 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:29,459 INFO L93 Difference]: Finished difference Result 3686 states and 14006 transitions. [2021-06-05 20:59:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:29,459 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 [2021-06-05 20:59:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:29,466 INFO L225 Difference]: With dead ends: 3686 [2021-06-05 20:59:29,466 INFO L226 Difference]: Without dead ends: 3439 [2021-06-05 20:59:29,467 INFO L810 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 [2021-06-05 20:59:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2021-06-05 20:59:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 1813. [2021-06-05 20:59:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.043598233995585) internal successors, (7327), 1812 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7327 transitions. [2021-06-05 20:59:29,511 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7327 transitions. Word has length 25 [2021-06-05 20:59:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:29,511 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7327 transitions. [2021-06-05 20:59:29,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7327 transitions. [2021-06-05 20:59:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:29,514 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:29,514 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:29,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 20:59:29,514 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1451201979, now seen corresponding path program 320 times [2021-06-05 20:59:29,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:29,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214493447] [2021-06-05 20:59:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:29,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:29,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214493447] [2021-06-05 20:59:29,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214493447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:29,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:29,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:29,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932151745] [2021-06-05 20:59:29,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:29,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:29,592 INFO L87 Difference]: Start difference. First operand 1813 states and 7327 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:29,658 INFO L93 Difference]: Finished difference Result 3724 states and 14131 transitions. [2021-06-05 20:59:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:29,658 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 [2021-06-05 20:59:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:29,665 INFO L225 Difference]: With dead ends: 3724 [2021-06-05 20:59:29,665 INFO L226 Difference]: Without dead ends: 3411 [2021-06-05 20:59:29,665 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-06-05 20:59:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 1785. [2021-06-05 20:59:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.051008968609866) internal successors, (7227), 1784 states have internal predecessors, (7227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7227 transitions. [2021-06-05 20:59:29,710 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7227 transitions. Word has length 25 [2021-06-05 20:59:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:29,710 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7227 transitions. [2021-06-05 20:59:29,710 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) [2021-06-05 20:59:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7227 transitions. [2021-06-05 20:59:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:29,712 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:29,712 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:29,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 20:59:29,713 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:29,713 INFO L82 PathProgramCache]: Analyzing trace with hash 65019865, now seen corresponding path program 321 times [2021-06-05 20:59:29,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:29,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967969160] [2021-06-05 20:59:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:29,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:29,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967969160] [2021-06-05 20:59:29,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967969160] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:29,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:29,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:29,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158853780] [2021-06-05 20:59:29,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:29,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:29,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:29,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:29,787 INFO L87 Difference]: Start difference. First operand 1785 states and 7227 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:29,856 INFO L93 Difference]: Finished difference Result 3604 states and 13693 transitions. [2021-06-05 20:59:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:29,857 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 [2021-06-05 20:59:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:29,863 INFO L225 Difference]: With dead ends: 3604 [2021-06-05 20:59:29,863 INFO L226 Difference]: Without dead ends: 3357 [2021-06-05 20:59:29,863 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-06-05 20:59:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 1809. [2021-06-05 20:59:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.039269911504425) internal successors, (7303), 1808 states have internal predecessors, (7303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7303 transitions. [2021-06-05 20:59:29,919 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7303 transitions. Word has length 25 [2021-06-05 20:59:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:29,919 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7303 transitions. [2021-06-05 20:59:29,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7303 transitions. [2021-06-05 20:59:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:29,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:29,922 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:29,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 20:59:29,922 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:29,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:29,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1877252135, now seen corresponding path program 322 times [2021-06-05 20:59:29,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:29,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833386681] [2021-06-05 20:59:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:29,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:29,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833386681] [2021-06-05 20:59:29,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833386681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:29,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:29,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:29,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787666237] [2021-06-05 20:59:29,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:29,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:29,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:29,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:29,993 INFO L87 Difference]: Start difference. First operand 1809 states and 7303 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:30,058 INFO L93 Difference]: Finished difference Result 3428 states and 13116 transitions. [2021-06-05 20:59:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:30,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:30,065 INFO L225 Difference]: With dead ends: 3428 [2021-06-05 20:59:30,065 INFO L226 Difference]: Without dead ends: 3141 [2021-06-05 20:59:30,065 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2021-06-05 20:59:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 1785. [2021-06-05 20:59:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.0442825112107625) internal successors, (7215), 1784 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7215 transitions. [2021-06-05 20:59:30,108 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7215 transitions. Word has length 25 [2021-06-05 20:59:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:30,108 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7215 transitions. [2021-06-05 20:59:30,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7215 transitions. [2021-06-05 20:59:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:30,110 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:30,110 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:30,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 20:59:30,110 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1482181819, now seen corresponding path program 323 times [2021-06-05 20:59:30,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:30,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113274008] [2021-06-05 20:59:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:30,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:30,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113274008] [2021-06-05 20:59:30,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113274008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:30,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:30,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:30,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557760961] [2021-06-05 20:59:30,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:30,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:30,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:30,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:30,190 INFO L87 Difference]: Start difference. First operand 1785 states and 7215 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:30,255 INFO L93 Difference]: Finished difference Result 3654 states and 13890 transitions. [2021-06-05 20:59:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:30,262 INFO L225 Difference]: With dead ends: 3654 [2021-06-05 20:59:30,262 INFO L226 Difference]: Without dead ends: 3369 [2021-06-05 20:59:30,262 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2021-06-05 20:59:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 1821. [2021-06-05 20:59:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.03021978021978) internal successors, (7335), 1820 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7335 transitions. [2021-06-05 20:59:30,306 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7335 transitions. Word has length 25 [2021-06-05 20:59:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:30,306 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7335 transitions. [2021-06-05 20:59:30,306 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) [2021-06-05 20:59:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7335 transitions. [2021-06-05 20:59:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:30,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:30,309 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:30,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 20:59:30,309 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash 741229721, now seen corresponding path program 324 times [2021-06-05 20:59:30,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:30,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236762453] [2021-06-05 20:59:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:30,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:30,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236762453] [2021-06-05 20:59:30,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236762453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:30,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:30,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:30,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49989851] [2021-06-05 20:59:30,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:30,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:30,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:30,387 INFO L87 Difference]: Start difference. First operand 1821 states and 7335 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:30,453 INFO L93 Difference]: Finished difference Result 3440 states and 13148 transitions. [2021-06-05 20:59:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:30,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:30,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:30,459 INFO L225 Difference]: With dead ends: 3440 [2021-06-05 20:59:30,460 INFO L226 Difference]: Without dead ends: 3129 [2021-06-05 20:59:30,460 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-06-05 20:59:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1773. [2021-06-05 20:59:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.051354401805869) internal successors, (7179), 1772 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7179 transitions. [2021-06-05 20:59:30,502 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7179 transitions. Word has length 25 [2021-06-05 20:59:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:30,503 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7179 transitions. [2021-06-05 20:59:30,503 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) [2021-06-05 20:59:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7179 transitions. [2021-06-05 20:59:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:30,505 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:30,505 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:30,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 20:59:30,505 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1448213435, now seen corresponding path program 325 times [2021-06-05 20:59:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:30,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783861108] [2021-06-05 20:59:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:30,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:30,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783861108] [2021-06-05 20:59:30,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783861108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:30,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:30,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541712838] [2021-06-05 20:59:30,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:30,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:30,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:30,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:30,580 INFO L87 Difference]: Start difference. First operand 1773 states and 7179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:30,633 INFO L93 Difference]: Finished difference Result 3526 states and 13364 transitions. [2021-06-05 20:59:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:30,634 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 [2021-06-05 20:59:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:30,640 INFO L225 Difference]: With dead ends: 3526 [2021-06-05 20:59:30,640 INFO L226 Difference]: Without dead ends: 3279 [2021-06-05 20:59:30,640 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-06-05 20:59:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1797. [2021-06-05 20:59:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.043986636971047) internal successors, (7263), 1796 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7263 transitions. [2021-06-05 20:59:30,683 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7263 transitions. Word has length 25 [2021-06-05 20:59:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:30,683 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7263 transitions. [2021-06-05 20:59:30,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7263 transitions. [2021-06-05 20:59:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:30,686 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:30,686 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:30,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 20:59:30,686 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:30,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1166257221, now seen corresponding path program 326 times [2021-06-05 20:59:30,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:30,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005819427] [2021-06-05 20:59:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:30,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:30,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005819427] [2021-06-05 20:59:30,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005819427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:30,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:30,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:30,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653290149] [2021-06-05 20:59:30,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:30,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:30,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:30,751 INFO L87 Difference]: Start difference. First operand 1797 states and 7263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:30,815 INFO L93 Difference]: Finished difference Result 3526 states and 13348 transitions. [2021-06-05 20:59:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:30,822 INFO L225 Difference]: With dead ends: 3526 [2021-06-05 20:59:30,822 INFO L226 Difference]: Without dead ends: 3263 [2021-06-05 20:59:30,822 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-06-05 20:59:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 1781. [2021-06-05 20:59:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.048876404494382) internal successors, (7207), 1780 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7207 transitions. [2021-06-05 20:59:30,865 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7207 transitions. Word has length 25 [2021-06-05 20:59:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:30,865 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7207 transitions. [2021-06-05 20:59:30,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7207 transitions. [2021-06-05 20:59:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:30,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:30,867 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:30,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 20:59:30,868 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:30,868 INFO L82 PathProgramCache]: Analyzing trace with hash 601416473, now seen corresponding path program 327 times [2021-06-05 20:59:30,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:30,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392023816] [2021-06-05 20:59:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:30,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:30,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392023816] [2021-06-05 20:59:30,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392023816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:30,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:30,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:30,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909783557] [2021-06-05 20:59:30,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:30,933 INFO L87 Difference]: Start difference. First operand 1781 states and 7207 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:30,987 INFO L93 Difference]: Finished difference Result 3470 states and 13160 transitions. [2021-06-05 20:59:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:30,987 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 [2021-06-05 20:59:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:30,994 INFO L225 Difference]: With dead ends: 3470 [2021-06-05 20:59:30,994 INFO L226 Difference]: Without dead ends: 3223 [2021-06-05 20:59:30,994 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2021-06-05 20:59:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 1805. [2021-06-05 20:59:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 4.037139689578714) internal successors, (7283), 1804 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7283 transitions. [2021-06-05 20:59:31,037 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7283 transitions. Word has length 25 [2021-06-05 20:59:31,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:31,037 INFO L482 AbstractCegarLoop]: Abstraction has 1805 states and 7283 transitions. [2021-06-05 20:59:31,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7283 transitions. [2021-06-05 20:59:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:31,039 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:31,039 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:31,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 20:59:31,039 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1243755451, now seen corresponding path program 328 times [2021-06-05 20:59:31,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:31,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983809621] [2021-06-05 20:59:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:31,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:31,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983809621] [2021-06-05 20:59:31,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983809621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:31,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:31,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:31,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497334657] [2021-06-05 20:59:31,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:31,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:31,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:31,105 INFO L87 Difference]: Start difference. First operand 1805 states and 7283 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:31,163 INFO L93 Difference]: Finished difference Result 3294 states and 12583 transitions. [2021-06-05 20:59:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:31,169 INFO L225 Difference]: With dead ends: 3294 [2021-06-05 20:59:31,169 INFO L226 Difference]: Without dead ends: 3007 [2021-06-05 20:59:31,169 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-06-05 20:59:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1781. [2021-06-05 20:59:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.04438202247191) internal successors, (7199), 1780 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7199 transitions. [2021-06-05 20:59:31,211 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7199 transitions. Word has length 25 [2021-06-05 20:59:31,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:31,211 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7199 transitions. [2021-06-05 20:59:31,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7199 transitions. [2021-06-05 20:59:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:31,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:31,213 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:31,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 20:59:31,213 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:31,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash 621124539, now seen corresponding path program 329 times [2021-06-05 20:59:31,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:31,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142545057] [2021-06-05 20:59:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:31,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:31,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142545057] [2021-06-05 20:59:31,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142545057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:31,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:31,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:31,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659898990] [2021-06-05 20:59:31,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:31,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:31,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:31,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:31,284 INFO L87 Difference]: Start difference. First operand 1781 states and 7199 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:31,347 INFO L93 Difference]: Finished difference Result 3278 states and 12527 transitions. [2021-06-05 20:59:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:31,353 INFO L225 Difference]: With dead ends: 3278 [2021-06-05 20:59:31,354 INFO L226 Difference]: Without dead ends: 3031 [2021-06-05 20:59:31,354 INFO L810 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 [2021-06-05 20:59:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-06-05 20:59:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1805. [2021-06-05 20:59:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 4.03270509977827) internal successors, (7275), 1804 states have internal predecessors, (7275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7275 transitions. [2021-06-05 20:59:31,396 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7275 transitions. Word has length 25 [2021-06-05 20:59:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:31,396 INFO L482 AbstractCegarLoop]: Abstraction has 1805 states and 7275 transitions. [2021-06-05 20:59:31,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7275 transitions. [2021-06-05 20:59:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:31,398 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:31,398 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:31,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 20:59:31,398 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:31,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1422212455, now seen corresponding path program 330 times [2021-06-05 20:59:31,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:31,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081667751] [2021-06-05 20:59:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:31,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:31,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081667751] [2021-06-05 20:59:31,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081667751] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:31,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:31,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:31,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465475799] [2021-06-05 20:59:31,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:31,470 INFO L87 Difference]: Start difference. First operand 1805 states and 7275 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:31,523 INFO L93 Difference]: Finished difference Result 3030 states and 11674 transitions. [2021-06-05 20:59:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:31,528 INFO L225 Difference]: With dead ends: 3030 [2021-06-05 20:59:31,529 INFO L226 Difference]: Without dead ends: 2735 [2021-06-05 20:59:31,529 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-05 20:59:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1773. [2021-06-05 20:59:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.049097065462754) internal successors, (7175), 1772 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7175 transitions. [2021-06-05 20:59:31,568 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7175 transitions. Word has length 25 [2021-06-05 20:59:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:31,568 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7175 transitions. [2021-06-05 20:59:31,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7175 transitions. [2021-06-05 20:59:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:31,571 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:31,571 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:31,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 20:59:31,571 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:31,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2122649571, now seen corresponding path program 331 times [2021-06-05 20:59:31,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:31,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545012085] [2021-06-05 20:59:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:31,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:31,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545012085] [2021-06-05 20:59:31,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545012085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:31,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:31,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:31,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4352845] [2021-06-05 20:59:31,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:31,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:31,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:31,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:31,635 INFO L87 Difference]: Start difference. First operand 1773 states and 7175 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:31,690 INFO L93 Difference]: Finished difference Result 3630 states and 13794 transitions. [2021-06-05 20:59:31,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:31,698 INFO L225 Difference]: With dead ends: 3630 [2021-06-05 20:59:31,698 INFO L226 Difference]: Without dead ends: 3345 [2021-06-05 20:59:31,698 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2021-06-05 20:59:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 1813. [2021-06-05 20:59:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.039183222958058) internal successors, (7319), 1812 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7319 transitions. [2021-06-05 20:59:31,743 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7319 transitions. Word has length 25 [2021-06-05 20:59:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:31,743 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7319 transitions. [2021-06-05 20:59:31,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7319 transitions. [2021-06-05 20:59:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:31,746 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:31,746 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:31,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 20:59:31,746 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:31,746 INFO L82 PathProgramCache]: Analyzing trace with hash 780173179, now seen corresponding path program 332 times [2021-06-05 20:59:31,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:31,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68447987] [2021-06-05 20:59:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:31,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:31,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68447987] [2021-06-05 20:59:31,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68447987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:31,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:31,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:31,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188002348] [2021-06-05 20:59:31,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:31,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:31,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:31,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:31,821 INFO L87 Difference]: Start difference. First operand 1813 states and 7319 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:31,878 INFO L93 Difference]: Finished difference Result 3592 states and 13613 transitions. [2021-06-05 20:59:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:31,885 INFO L225 Difference]: With dead ends: 3592 [2021-06-05 20:59:31,885 INFO L226 Difference]: Without dead ends: 3317 [2021-06-05 20:59:31,885 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2021-06-05 20:59:31,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 1785. [2021-06-05 20:59:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.04652466367713) internal successors, (7219), 1784 states have internal predecessors, (7219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7219 transitions. [2021-06-05 20:59:31,928 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7219 transitions. Word has length 25 [2021-06-05 20:59:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:31,929 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7219 transitions. [2021-06-05 20:59:31,929 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) [2021-06-05 20:59:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7219 transitions. [2021-06-05 20:59:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:31,931 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:31,931 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:31,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 20:59:31,931 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:31,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1325520763, now seen corresponding path program 333 times [2021-06-05 20:59:31,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:31,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245208554] [2021-06-05 20:59:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:32,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:32,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245208554] [2021-06-05 20:59:32,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245208554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:32,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:32,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:32,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437527725] [2021-06-05 20:59:32,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:32,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:32,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:32,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:32,002 INFO L87 Difference]: Start difference. First operand 1785 states and 7219 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:32,056 INFO L93 Difference]: Finished difference Result 3524 states and 13381 transitions. [2021-06-05 20:59:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:32,062 INFO L225 Difference]: With dead ends: 3524 [2021-06-05 20:59:32,062 INFO L226 Difference]: Without dead ends: 3239 [2021-06-05 20:59:32,062 INFO L810 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 [2021-06-05 20:59:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2021-06-05 20:59:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 1821. [2021-06-05 20:59:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.032417582417582) internal successors, (7339), 1820 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7339 transitions. [2021-06-05 20:59:32,106 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7339 transitions. Word has length 25 [2021-06-05 20:59:32,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:32,106 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7339 transitions. [2021-06-05 20:59:32,106 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) [2021-06-05 20:59:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7339 transitions. [2021-06-05 20:59:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:32,108 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:32,108 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:32,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 20:59:32,108 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1125787653, now seen corresponding path program 334 times [2021-06-05 20:59:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:32,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904254274] [2021-06-05 20:59:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:32,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:32,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904254274] [2021-06-05 20:59:32,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904254274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:32,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:32,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:32,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288834883] [2021-06-05 20:59:32,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:32,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:32,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:32,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:32,183 INFO L87 Difference]: Start difference. First operand 1821 states and 7339 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:32,237 INFO L93 Difference]: Finished difference Result 3310 states and 12639 transitions. [2021-06-05 20:59:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:32,243 INFO L225 Difference]: With dead ends: 3310 [2021-06-05 20:59:32,243 INFO L226 Difference]: Without dead ends: 3011 [2021-06-05 20:59:32,244 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-06-05 20:59:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1785. [2021-06-05 20:59:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.039798206278027) internal successors, (7207), 1784 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7207 transitions. [2021-06-05 20:59:32,285 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7207 transitions. Word has length 25 [2021-06-05 20:59:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:32,285 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7207 transitions. [2021-06-05 20:59:32,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7207 transitions. [2021-06-05 20:59:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:32,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:32,287 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:32,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 20:59:32,288 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:32,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1689778137, now seen corresponding path program 335 times [2021-06-05 20:59:32,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:32,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863747810] [2021-06-05 20:59:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:32,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:32,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863747810] [2021-06-05 20:59:32,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863747810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:32,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:32,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:32,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008539653] [2021-06-05 20:59:32,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:32,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:32,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:32,351 INFO L87 Difference]: Start difference. First operand 1785 states and 7207 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:32,403 INFO L93 Difference]: Finished difference Result 3282 states and 12535 transitions. [2021-06-05 20:59:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:32,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:32,409 INFO L225 Difference]: With dead ends: 3282 [2021-06-05 20:59:32,409 INFO L226 Difference]: Without dead ends: 3035 [2021-06-05 20:59:32,409 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2021-06-05 20:59:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 1809. [2021-06-05 20:59:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.02820796460177) internal successors, (7283), 1808 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7283 transitions. [2021-06-05 20:59:32,451 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7283 transitions. Word has length 25 [2021-06-05 20:59:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:32,451 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7283 transitions. [2021-06-05 20:59:32,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7283 transitions. [2021-06-05 20:59:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:32,454 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:32,454 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:32,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 20:59:32,454 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1524126533, now seen corresponding path program 336 times [2021-06-05 20:59:32,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:32,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041999656] [2021-06-05 20:59:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:32,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:32,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041999656] [2021-06-05 20:59:32,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041999656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:32,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:32,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:32,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743991681] [2021-06-05 20:59:32,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:32,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:32,527 INFO L87 Difference]: Start difference. First operand 1809 states and 7283 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:32,579 INFO L93 Difference]: Finished difference Result 3034 states and 11682 transitions. [2021-06-05 20:59:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:32,579 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 [2021-06-05 20:59:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:32,584 INFO L225 Difference]: With dead ends: 3034 [2021-06-05 20:59:32,584 INFO L226 Difference]: Without dead ends: 2731 [2021-06-05 20:59:32,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-06-05 20:59:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 1769. [2021-06-05 20:59:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.052601809954751) internal successors, (7165), 1768 states have internal predecessors, (7165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7165 transitions. [2021-06-05 20:59:32,624 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7165 transitions. Word has length 25 [2021-06-05 20:59:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:32,624 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7165 transitions. [2021-06-05 20:59:32,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7165 transitions. [2021-06-05 20:59:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:32,627 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:32,627 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:32,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 20:59:32,627 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:32,627 INFO L82 PathProgramCache]: Analyzing trace with hash 203920639, now seen corresponding path program 337 times [2021-06-05 20:59:32,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:32,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324627948] [2021-06-05 20:59:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:32,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:32,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324627948] [2021-06-05 20:59:32,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324627948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:32,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:32,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:32,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537723757] [2021-06-05 20:59:32,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:32,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:32,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:32,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:32,691 INFO L87 Difference]: Start difference. First operand 1769 states and 7165 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:32,746 INFO L93 Difference]: Finished difference Result 4044 states and 15477 transitions. [2021-06-05 20:59:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:32,754 INFO L225 Difference]: With dead ends: 4044 [2021-06-05 20:59:32,754 INFO L226 Difference]: Without dead ends: 3759 [2021-06-05 20:59:32,754 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2021-06-05 20:59:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 1823. [2021-06-05 20:59:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.048298572996707) internal successors, (7376), 1822 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7376 transitions. [2021-06-05 20:59:32,800 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7376 transitions. Word has length 25 [2021-06-05 20:59:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:32,801 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7376 transitions. [2021-06-05 20:59:32,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7376 transitions. [2021-06-05 20:59:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:32,803 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:32,803 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:32,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 20:59:32,803 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:32,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:32,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1188223907, now seen corresponding path program 338 times [2021-06-05 20:59:32,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:32,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593977684] [2021-06-05 20:59:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:32,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:32,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593977684] [2021-06-05 20:59:32,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593977684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:32,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:32,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:32,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452825928] [2021-06-05 20:59:32,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:32,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:32,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:32,867 INFO L87 Difference]: Start difference. First operand 1823 states and 7376 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:32,921 INFO L93 Difference]: Finished difference Result 4006 states and 15296 transitions. [2021-06-05 20:59:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:32,929 INFO L225 Difference]: With dead ends: 4006 [2021-06-05 20:59:32,929 INFO L226 Difference]: Without dead ends: 3731 [2021-06-05 20:59:32,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-06-05 20:59:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 1795. [2021-06-05 20:59:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.055741360089186) internal successors, (7276), 1794 states have internal predecessors, (7276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7276 transitions. [2021-06-05 20:59:32,976 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7276 transitions. Word has length 25 [2021-06-05 20:59:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:32,976 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7276 transitions. [2021-06-05 20:59:32,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7276 transitions. [2021-06-05 20:59:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:32,978 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:32,978 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:32,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 20:59:32,978 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:32,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:32,978 INFO L82 PathProgramCache]: Analyzing trace with hash -642876323, now seen corresponding path program 339 times [2021-06-05 20:59:32,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:32,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401053226] [2021-06-05 20:59:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:33,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:33,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401053226] [2021-06-05 20:59:33,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401053226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:33,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:33,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:33,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785280308] [2021-06-05 20:59:33,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:33,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:33,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:33,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:33,051 INFO L87 Difference]: Start difference. First operand 1795 states and 7276 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:33,107 INFO L93 Difference]: Finished difference Result 4068 states and 15577 transitions. [2021-06-05 20:59:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:33,107 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 [2021-06-05 20:59:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:33,115 INFO L225 Difference]: With dead ends: 4068 [2021-06-05 20:59:33,115 INFO L226 Difference]: Without dead ends: 3783 [2021-06-05 20:59:33,115 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2021-06-05 20:59:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 1831. [2021-06-05 20:59:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 4.0415300546448085) internal successors, (7396), 1830 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 7396 transitions. [2021-06-05 20:59:33,162 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 7396 transitions. Word has length 25 [2021-06-05 20:59:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:33,162 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 7396 transitions. [2021-06-05 20:59:33,162 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) [2021-06-05 20:59:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 7396 transitions. [2021-06-05 20:59:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:33,165 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:33,165 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:33,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 20:59:33,165 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:33,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1200782557, now seen corresponding path program 340 times [2021-06-05 20:59:33,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:33,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901947229] [2021-06-05 20:59:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:33,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:33,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901947229] [2021-06-05 20:59:33,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901947229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:33,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:33,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:33,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272825267] [2021-06-05 20:59:33,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:33,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:33,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:33,238 INFO L87 Difference]: Start difference. First operand 1831 states and 7396 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:33,300 INFO L93 Difference]: Finished difference Result 4046 states and 15460 transitions. [2021-06-05 20:59:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:33,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:33,308 INFO L225 Difference]: With dead ends: 4046 [2021-06-05 20:59:33,308 INFO L226 Difference]: Without dead ends: 3747 [2021-06-05 20:59:33,308 INFO L810 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 [2021-06-05 20:59:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-06-05 20:59:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 1795. [2021-06-05 20:59:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.0490523968784835) internal successors, (7264), 1794 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7264 transitions. [2021-06-05 20:59:33,355 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7264 transitions. Word has length 25 [2021-06-05 20:59:33,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:33,355 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7264 transitions. [2021-06-05 20:59:33,355 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) [2021-06-05 20:59:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7264 transitions. [2021-06-05 20:59:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:33,358 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:33,358 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:33,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 20:59:33,358 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:33,358 INFO L82 PathProgramCache]: Analyzing trace with hash -278618949, now seen corresponding path program 341 times [2021-06-05 20:59:33,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:33,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967385218] [2021-06-05 20:59:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:33,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:33,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967385218] [2021-06-05 20:59:33,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967385218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:33,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:33,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:33,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735462663] [2021-06-05 20:59:33,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:33,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:33,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:33,434 INFO L87 Difference]: Start difference. First operand 1795 states and 7264 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:33,497 INFO L93 Difference]: Finished difference Result 3980 states and 15203 transitions. [2021-06-05 20:59:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:33,497 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 [2021-06-05 20:59:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:33,504 INFO L225 Difference]: With dead ends: 3980 [2021-06-05 20:59:33,505 INFO L226 Difference]: Without dead ends: 3733 [2021-06-05 20:59:33,505 INFO L810 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 [2021-06-05 20:59:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2021-06-05 20:59:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 1819. [2021-06-05 20:59:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 4.037403740374037) internal successors, (7340), 1818 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7340 transitions. [2021-06-05 20:59:33,552 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7340 transitions. Word has length 25 [2021-06-05 20:59:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:33,552 INFO L482 AbstractCegarLoop]: Abstraction has 1819 states and 7340 transitions. [2021-06-05 20:59:33,552 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) [2021-06-05 20:59:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7340 transitions. [2021-06-05 20:59:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:33,554 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:33,554 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:33,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 20:59:33,554 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash 802443677, now seen corresponding path program 342 times [2021-06-05 20:59:33,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:33,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509174821] [2021-06-05 20:59:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:33,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:33,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509174821] [2021-06-05 20:59:33,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509174821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:33,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:33,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:33,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267663599] [2021-06-05 20:59:33,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:33,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:33,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:33,619 INFO L87 Difference]: Start difference. First operand 1819 states and 7340 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:33,685 INFO L93 Difference]: Finished difference Result 3996 states and 15251 transitions. [2021-06-05 20:59:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:33,692 INFO L225 Difference]: With dead ends: 3996 [2021-06-05 20:59:33,693 INFO L226 Difference]: Without dead ends: 3697 [2021-06-05 20:59:33,693 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-06-05 20:59:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1783. [2021-06-05 20:59:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.054994388327722) internal successors, (7226), 1782 states have internal predecessors, (7226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7226 transitions. [2021-06-05 20:59:33,739 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7226 transitions. Word has length 25 [2021-06-05 20:59:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:33,739 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7226 transitions. [2021-06-05 20:59:33,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7226 transitions. [2021-06-05 20:59:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:33,741 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:33,741 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:33,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 20:59:33,741 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1759434275, now seen corresponding path program 343 times [2021-06-05 20:59:33,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:33,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105221666] [2021-06-05 20:59:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:33,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:33,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105221666] [2021-06-05 20:59:33,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105221666] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:33,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:33,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:33,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870621306] [2021-06-05 20:59:33,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:33,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:33,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:33,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:33,815 INFO L87 Difference]: Start difference. First operand 1783 states and 7226 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:33,872 INFO L93 Difference]: Finished difference Result 4071 states and 15534 transitions. [2021-06-05 20:59:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:33,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:33,880 INFO L225 Difference]: With dead ends: 4071 [2021-06-05 20:59:33,880 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 20:59:33,880 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 20:59:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1841. [2021-06-05 20:59:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.045108695652174) internal successors, (7443), 1840 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7443 transitions. [2021-06-05 20:59:33,928 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7443 transitions. Word has length 25 [2021-06-05 20:59:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:33,928 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7443 transitions. [2021-06-05 20:59:33,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7443 transitions. [2021-06-05 20:59:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:33,930 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:33,930 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:33,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 20:59:33,930 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1143388475, now seen corresponding path program 344 times [2021-06-05 20:59:33,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:33,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313315446] [2021-06-05 20:59:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:34,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:34,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313315446] [2021-06-05 20:59:34,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313315446] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:34,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:34,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:34,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979683716] [2021-06-05 20:59:34,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:34,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:34,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:34,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:34,010 INFO L87 Difference]: Start difference. First operand 1841 states and 7443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:34,070 INFO L93 Difference]: Finished difference Result 4033 states and 15353 transitions. [2021-06-05 20:59:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:34,070 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 [2021-06-05 20:59:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:34,078 INFO L225 Difference]: With dead ends: 4033 [2021-06-05 20:59:34,078 INFO L226 Difference]: Without dead ends: 3758 [2021-06-05 20:59:34,078 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-06-05 20:59:34,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 1813. [2021-06-05 20:59:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.051324503311259) internal successors, (7341), 1812 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7341 transitions. [2021-06-05 20:59:34,126 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7341 transitions. Word has length 25 [2021-06-05 20:59:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:34,126 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7341 transitions. [2021-06-05 20:59:34,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7341 transitions. [2021-06-05 20:59:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:34,128 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:34,128 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:34,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 20:59:34,128 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:34,129 INFO L82 PathProgramCache]: Analyzing trace with hash 628646365, now seen corresponding path program 345 times [2021-06-05 20:59:34,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:34,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696485374] [2021-06-05 20:59:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:34,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:34,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696485374] [2021-06-05 20:59:34,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696485374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:34,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:34,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:34,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715816468] [2021-06-05 20:59:34,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:34,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:34,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:34,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:34,200 INFO L87 Difference]: Start difference. First operand 1813 states and 7341 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:34,266 INFO L93 Difference]: Finished difference Result 4193 states and 15985 transitions. [2021-06-05 20:59:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:34,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:34,275 INFO L225 Difference]: With dead ends: 4193 [2021-06-05 20:59:34,275 INFO L226 Difference]: Without dead ends: 3908 [2021-06-05 20:59:34,275 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-06-05 20:59:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 1892. [2021-06-05 20:59:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.023268112109995) internal successors, (7608), 1891 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7608 transitions. [2021-06-05 20:59:34,324 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7608 transitions. Word has length 25 [2021-06-05 20:59:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:34,325 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7608 transitions. [2021-06-05 20:59:34,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7608 transitions. [2021-06-05 20:59:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:34,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:34,327 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:34,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 20:59:34,327 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:34,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1360728669, now seen corresponding path program 346 times [2021-06-05 20:59:34,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:34,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997605507] [2021-06-05 20:59:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:34,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:34,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997605507] [2021-06-05 20:59:34,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997605507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:34,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:34,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:34,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635534385] [2021-06-05 20:59:34,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:34,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:34,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:34,394 INFO L87 Difference]: Start difference. First operand 1892 states and 7608 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:34,441 INFO L93 Difference]: Finished difference Result 4226 states and 16052 transitions. [2021-06-05 20:59:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:34,449 INFO L225 Difference]: With dead ends: 4226 [2021-06-05 20:59:34,449 INFO L226 Difference]: Without dead ends: 3829 [2021-06-05 20:59:34,449 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2021-06-05 20:59:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 1813. [2021-06-05 20:59:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.03476821192053) internal successors, (7311), 1812 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7311 transitions. [2021-06-05 20:59:34,496 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7311 transitions. Word has length 25 [2021-06-05 20:59:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:34,496 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7311 transitions. [2021-06-05 20:59:34,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7311 transitions. [2021-06-05 20:59:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:34,499 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:34,499 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:34,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 20:59:34,499 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:34,499 INFO L82 PathProgramCache]: Analyzing trace with hash 992903739, now seen corresponding path program 347 times [2021-06-05 20:59:34,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:34,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385364814] [2021-06-05 20:59:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:34,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:34,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385364814] [2021-06-05 20:59:34,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385364814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:34,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:34,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:34,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191815307] [2021-06-05 20:59:34,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:34,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:34,571 INFO L87 Difference]: Start difference. First operand 1813 states and 7311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:34,634 INFO L93 Difference]: Finished difference Result 4082 states and 15515 transitions. [2021-06-05 20:59:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:34,634 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 [2021-06-05 20:59:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:34,642 INFO L225 Difference]: With dead ends: 4082 [2021-06-05 20:59:34,642 INFO L226 Difference]: Without dead ends: 3835 [2021-06-05 20:59:34,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-06-05 20:59:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 1857. [2021-06-05 20:59:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 4.021012931034483) internal successors, (7463), 1856 states have internal predecessors, (7463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 7463 transitions. [2021-06-05 20:59:34,690 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 7463 transitions. Word has length 25 [2021-06-05 20:59:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:34,690 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 7463 transitions. [2021-06-05 20:59:34,690 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) [2021-06-05 20:59:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 7463 transitions. [2021-06-05 20:59:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:34,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:34,693 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:34,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 20:59:34,693 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:34,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:34,693 INFO L82 PathProgramCache]: Analyzing trace with hash -76615267, now seen corresponding path program 348 times [2021-06-05 20:59:34,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:34,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371139367] [2021-06-05 20:59:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:34,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:34,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371139367] [2021-06-05 20:59:34,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371139367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:34,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:34,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:34,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790744693] [2021-06-05 20:59:34,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:34,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:34,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:34,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:34,766 INFO L87 Difference]: Start difference. First operand 1857 states and 7463 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:34,815 INFO L93 Difference]: Finished difference Result 4153 states and 15754 transitions. [2021-06-05 20:59:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:34,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:34,823 INFO L225 Difference]: With dead ends: 4153 [2021-06-05 20:59:34,823 INFO L226 Difference]: Without dead ends: 3761 [2021-06-05 20:59:34,823 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-06-05 20:59:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 1783. [2021-06-05 20:59:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.047138047138047) internal successors, (7212), 1782 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7212 transitions. [2021-06-05 20:59:34,869 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7212 transitions. Word has length 25 [2021-06-05 20:59:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:34,869 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7212 transitions. [2021-06-05 20:59:34,869 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) [2021-06-05 20:59:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7212 transitions. [2021-06-05 20:59:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:34,872 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:34,872 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:34,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 20:59:34,872 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:34,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1678784955, now seen corresponding path program 349 times [2021-06-05 20:59:34,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:34,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018146535] [2021-06-05 20:59:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:34,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:34,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018146535] [2021-06-05 20:59:34,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018146535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:34,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:34,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:34,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210089266] [2021-06-05 20:59:34,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:34,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:34,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:34,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:34,951 INFO L87 Difference]: Start difference. First operand 1783 states and 7212 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:35,007 INFO L93 Difference]: Finished difference Result 4097 states and 15655 transitions. [2021-06-05 20:59:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:35,008 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 [2021-06-05 20:59:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:35,015 INFO L225 Difference]: With dead ends: 4097 [2021-06-05 20:59:35,015 INFO L226 Difference]: Without dead ends: 3812 [2021-06-05 20:59:35,016 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-06-05 20:59:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 1853. [2021-06-05 20:59:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.040496760259179) internal successors, (7483), 1852 states have internal predecessors, (7483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7483 transitions. [2021-06-05 20:59:35,063 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7483 transitions. Word has length 25 [2021-06-05 20:59:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:35,063 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7483 transitions. [2021-06-05 20:59:35,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7483 transitions. [2021-06-05 20:59:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:35,066 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:35,066 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:35,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 20:59:35,066 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash -772523461, now seen corresponding path program 350 times [2021-06-05 20:59:35,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:35,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685838038] [2021-06-05 20:59:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:35,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:35,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685838038] [2021-06-05 20:59:35,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685838038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:35,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:35,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:35,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500015079] [2021-06-05 20:59:35,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:35,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:35,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:35,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:35,145 INFO L87 Difference]: Start difference. First operand 1853 states and 7483 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:35,202 INFO L93 Difference]: Finished difference Result 4075 states and 15538 transitions. [2021-06-05 20:59:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:35,210 INFO L225 Difference]: With dead ends: 4075 [2021-06-05 20:59:35,210 INFO L226 Difference]: Without dead ends: 3776 [2021-06-05 20:59:35,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-06-05 20:59:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1817. [2021-06-05 20:59:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.044603524229075) internal successors, (7345), 1816 states have internal predecessors, (7345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7345 transitions. [2021-06-05 20:59:35,257 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7345 transitions. Word has length 25 [2021-06-05 20:59:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:35,257 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7345 transitions. [2021-06-05 20:59:35,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7345 transitions. [2021-06-05 20:59:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:35,259 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:35,259 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:35,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 20:59:35,260 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1061261597, now seen corresponding path program 351 times [2021-06-05 20:59:35,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:35,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927436952] [2021-06-05 20:59:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:35,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:35,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927436952] [2021-06-05 20:59:35,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927436952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:35,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:35,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:35,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086461102] [2021-06-05 20:59:35,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:35,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:35,341 INFO L87 Difference]: Start difference. First operand 1817 states and 7345 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:35,399 INFO L93 Difference]: Finished difference Result 4116 states and 15676 transitions. [2021-06-05 20:59:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:35,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:35,407 INFO L225 Difference]: With dead ends: 4116 [2021-06-05 20:59:35,407 INFO L226 Difference]: Without dead ends: 3831 [2021-06-05 20:59:35,407 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2021-06-05 20:59:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 1896. [2021-06-05 20:59:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.0168865435356205) internal successors, (7612), 1895 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7612 transitions. [2021-06-05 20:59:35,455 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7612 transitions. Word has length 25 [2021-06-05 20:59:35,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:35,455 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7612 transitions. [2021-06-05 20:59:35,455 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) [2021-06-05 20:59:35,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7612 transitions. [2021-06-05 20:59:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:35,458 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:35,458 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:35,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 20:59:35,458 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:35,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:35,458 INFO L82 PathProgramCache]: Analyzing trace with hash -662332869, now seen corresponding path program 352 times [2021-06-05 20:59:35,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:35,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658460304] [2021-06-05 20:59:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:35,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:35,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658460304] [2021-06-05 20:59:35,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658460304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:35,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:35,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:35,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94851301] [2021-06-05 20:59:35,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:35,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:35,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:35,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:35,542 INFO L87 Difference]: Start difference. First operand 1896 states and 7612 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:35,589 INFO L93 Difference]: Finished difference Result 4149 states and 15743 transitions. [2021-06-05 20:59:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:35,597 INFO L225 Difference]: With dead ends: 4149 [2021-06-05 20:59:35,597 INFO L226 Difference]: Without dead ends: 3752 [2021-06-05 20:59:35,597 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-06-05 20:59:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 1817. [2021-06-05 20:59:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.025881057268722) internal successors, (7311), 1816 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7311 transitions. [2021-06-05 20:59:35,643 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7311 transitions. Word has length 25 [2021-06-05 20:59:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:35,643 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7311 transitions. [2021-06-05 20:59:35,643 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) [2021-06-05 20:59:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7311 transitions. [2021-06-05 20:59:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:35,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:35,646 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:35,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 20:59:35,646 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1616065861, now seen corresponding path program 353 times [2021-06-05 20:59:35,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:35,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596600763] [2021-06-05 20:59:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:35,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:35,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596600763] [2021-06-05 20:59:35,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596600763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:35,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:35,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:35,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801151044] [2021-06-05 20:59:35,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:35,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:35,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:35,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:35,724 INFO L87 Difference]: Start difference. First operand 1817 states and 7311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:35,781 INFO L93 Difference]: Finished difference Result 4045 states and 15386 transitions. [2021-06-05 20:59:35,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:35,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:35,789 INFO L225 Difference]: With dead ends: 4045 [2021-06-05 20:59:35,789 INFO L226 Difference]: Without dead ends: 3782 [2021-06-05 20:59:35,790 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-05 20:59:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 1869. [2021-06-05 20:59:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 4.012312633832977) internal successors, (7495), 1868 states have internal predecessors, (7495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 7495 transitions. [2021-06-05 20:59:35,837 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 7495 transitions. Word has length 25 [2021-06-05 20:59:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:35,837 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 7495 transitions. [2021-06-05 20:59:35,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 7495 transitions. [2021-06-05 20:59:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:35,839 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:35,839 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:35,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 20:59:35,839 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:35,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1397714275, now seen corresponding path program 354 times [2021-06-05 20:59:35,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:35,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201007618] [2021-06-05 20:59:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:35,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:35,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201007618] [2021-06-05 20:59:35,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201007618] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:35,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:35,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:35,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932549406] [2021-06-05 20:59:35,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:35,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:35,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:35,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:35,918 INFO L87 Difference]: Start difference. First operand 1869 states and 7495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:35,964 INFO L93 Difference]: Finished difference Result 3973 states and 15074 transitions. [2021-06-05 20:59:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:35,972 INFO L225 Difference]: With dead ends: 3973 [2021-06-05 20:59:35,972 INFO L226 Difference]: Without dead ends: 3569 [2021-06-05 20:59:35,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2021-06-05 20:59:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 1783. [2021-06-05 20:59:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.0392817059483725) internal successors, (7198), 1782 states have internal predecessors, (7198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7198 transitions. [2021-06-05 20:59:36,017 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7198 transitions. Word has length 25 [2021-06-05 20:59:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:36,017 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7198 transitions. [2021-06-05 20:59:36,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7198 transitions. [2021-06-05 20:59:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:36,019 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:36,019 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:36,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 20:59:36,020 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2023140121, now seen corresponding path program 355 times [2021-06-05 20:59:36,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:36,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650940854] [2021-06-05 20:59:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:36,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:36,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650940854] [2021-06-05 20:59:36,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650940854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:36,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:36,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:36,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666434101] [2021-06-05 20:59:36,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:36,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:36,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:36,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:36,089 INFO L87 Difference]: Start difference. First operand 1783 states and 7198 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:36,190 INFO L93 Difference]: Finished difference Result 3910 states and 14877 transitions. [2021-06-05 20:59:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:36,198 INFO L225 Difference]: With dead ends: 3910 [2021-06-05 20:59:36,198 INFO L226 Difference]: Without dead ends: 3663 [2021-06-05 20:59:36,198 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-06-05 20:59:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 1827. [2021-06-05 20:59:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 4.033953997809419) internal successors, (7366), 1826 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 7366 transitions. [2021-06-05 20:59:36,244 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 7366 transitions. Word has length 25 [2021-06-05 20:59:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:36,244 INFO L482 AbstractCegarLoop]: Abstraction has 1827 states and 7366 transitions. [2021-06-05 20:59:36,244 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) [2021-06-05 20:59:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 7366 transitions. [2021-06-05 20:59:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:36,247 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:36,247 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:36,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 20:59:36,247 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1190764549, now seen corresponding path program 356 times [2021-06-05 20:59:36,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:36,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121319968] [2021-06-05 20:59:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:36,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:36,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121319968] [2021-06-05 20:59:36,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121319968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:36,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:36,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:36,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552859596] [2021-06-05 20:59:36,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:36,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:36,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:36,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:36,317 INFO L87 Difference]: Start difference. First operand 1827 states and 7366 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:36,376 INFO L93 Difference]: Finished difference Result 3926 states and 14925 transitions. [2021-06-05 20:59:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:36,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:36,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:36,384 INFO L225 Difference]: With dead ends: 3926 [2021-06-05 20:59:36,384 INFO L226 Difference]: Without dead ends: 3639 [2021-06-05 20:59:36,384 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-06-05 20:59:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 1803. [2021-06-05 20:59:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.038845726970033) internal successors, (7278), 1802 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7278 transitions. [2021-06-05 20:59:36,430 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7278 transitions. Word has length 25 [2021-06-05 20:59:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:36,431 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7278 transitions. [2021-06-05 20:59:36,431 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) [2021-06-05 20:59:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7278 transitions. [2021-06-05 20:59:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:36,433 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:36,433 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:36,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 20:59:36,433 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:36,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1405616763, now seen corresponding path program 357 times [2021-06-05 20:59:36,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:36,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145433631] [2021-06-05 20:59:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:36,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:36,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145433631] [2021-06-05 20:59:36,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145433631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:36,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:36,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:36,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491587356] [2021-06-05 20:59:36,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:36,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:36,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:36,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:36,511 INFO L87 Difference]: Start difference. First operand 1803 states and 7278 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:36,570 INFO L93 Difference]: Finished difference Result 3814 states and 14489 transitions. [2021-06-05 20:59:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:36,570 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 [2021-06-05 20:59:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:36,577 INFO L225 Difference]: With dead ends: 3814 [2021-06-05 20:59:36,577 INFO L226 Difference]: Without dead ends: 3567 [2021-06-05 20:59:36,578 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2021-06-05 20:59:36,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 1847. [2021-06-05 20:59:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.024918743228603) internal successors, (7430), 1846 states have internal predecessors, (7430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7430 transitions. [2021-06-05 20:59:36,624 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7430 transitions. Word has length 25 [2021-06-05 20:59:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:36,624 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7430 transitions. [2021-06-05 20:59:36,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7430 transitions. [2021-06-05 20:59:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:36,626 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:36,626 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:36,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 20:59:36,627 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:36,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2119579013, now seen corresponding path program 358 times [2021-06-05 20:59:36,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:36,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218559132] [2021-06-05 20:59:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:36,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:36,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218559132] [2021-06-05 20:59:36,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218559132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:36,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:36,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:36,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746277878] [2021-06-05 20:59:36,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:36,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:36,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:36,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:36,706 INFO L87 Difference]: Start difference. First operand 1847 states and 7430 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:36,760 INFO L93 Difference]: Finished difference Result 3885 states and 14728 transitions. [2021-06-05 20:59:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:36,761 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 [2021-06-05 20:59:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:36,767 INFO L225 Difference]: With dead ends: 3885 [2021-06-05 20:59:36,768 INFO L226 Difference]: Without dead ends: 3523 [2021-06-05 20:59:36,768 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2021-06-05 20:59:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 1803. [2021-06-05 20:59:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.027746947835738) internal successors, (7258), 1802 states have internal predecessors, (7258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7258 transitions. [2021-06-05 20:59:36,814 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7258 transitions. Word has length 25 [2021-06-05 20:59:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:36,814 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7258 transitions. [2021-06-05 20:59:36,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7258 transitions. [2021-06-05 20:59:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:36,816 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:36,816 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:36,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 20:59:36,817 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1793621725, now seen corresponding path program 359 times [2021-06-05 20:59:36,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:36,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593652681] [2021-06-05 20:59:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:36,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:36,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593652681] [2021-06-05 20:59:36,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593652681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:36,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:36,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:36,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545019768] [2021-06-05 20:59:36,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:36,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:36,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:36,896 INFO L87 Difference]: Start difference. First operand 1803 states and 7258 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:36,965 INFO L93 Difference]: Finished difference Result 3802 states and 14433 transitions. [2021-06-05 20:59:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:36,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:36,972 INFO L225 Difference]: With dead ends: 3802 [2021-06-05 20:59:36,972 INFO L226 Difference]: Without dead ends: 3539 [2021-06-05 20:59:36,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2021-06-05 20:59:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 1855. [2021-06-05 20:59:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.014023732470334) internal successors, (7442), 1854 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7442 transitions. [2021-06-05 20:59:37,023 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7442 transitions. Word has length 25 [2021-06-05 20:59:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:37,024 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7442 transitions. [2021-06-05 20:59:37,024 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) [2021-06-05 20:59:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7442 transitions. [2021-06-05 20:59:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:37,026 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:37,026 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:37,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 20:59:37,026 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash -27413701, now seen corresponding path program 360 times [2021-06-05 20:59:37,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:37,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065921597] [2021-06-05 20:59:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:37,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:37,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065921597] [2021-06-05 20:59:37,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065921597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:37,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:37,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:37,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606828313] [2021-06-05 20:59:37,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:37,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:37,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:37,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:37,106 INFO L87 Difference]: Start difference. First operand 1855 states and 7442 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:37,162 INFO L93 Difference]: Finished difference Result 3730 states and 14121 transitions. [2021-06-05 20:59:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:37,163 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 [2021-06-05 20:59:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:37,169 INFO L225 Difference]: With dead ends: 3730 [2021-06-05 20:59:37,170 INFO L226 Difference]: Without dead ends: 3320 [2021-06-05 20:59:37,170 INFO L810 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 [2021-06-05 20:59:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2021-06-05 20:59:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 1763. [2021-06-05 20:59:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.057321225879682) internal successors, (7149), 1762 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7149 transitions. [2021-06-05 20:59:37,214 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7149 transitions. Word has length 25 [2021-06-05 20:59:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:37,215 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7149 transitions. [2021-06-05 20:59:37,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7149 transitions. [2021-06-05 20:59:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:37,217 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:37,217 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:37,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 20:59:37,217 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash -252903815, now seen corresponding path program 361 times [2021-06-05 20:59:37,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:37,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609638264] [2021-06-05 20:59:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:37,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:37,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609638264] [2021-06-05 20:59:37,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609638264] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:37,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:37,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:37,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157580828] [2021-06-05 20:59:37,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:37,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:37,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:37,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:37,296 INFO L87 Difference]: Start difference. First operand 1763 states and 7149 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:37,353 INFO L93 Difference]: Finished difference Result 3975 states and 15126 transitions. [2021-06-05 20:59:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:37,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:37,361 INFO L225 Difference]: With dead ends: 3975 [2021-06-05 20:59:37,361 INFO L226 Difference]: Without dead ends: 3728 [2021-06-05 20:59:37,361 INFO L810 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 [2021-06-05 20:59:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-05 20:59:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 1829. [2021-06-05 20:59:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 4.049234135667396) internal successors, (7402), 1828 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 7402 transitions. [2021-06-05 20:59:37,423 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 7402 transitions. Word has length 25 [2021-06-05 20:59:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:37,423 INFO L482 AbstractCegarLoop]: Abstraction has 1829 states and 7402 transitions. [2021-06-05 20:59:37,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 7402 transitions. [2021-06-05 20:59:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:37,426 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:37,426 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:37,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 20:59:37,426 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1884850981, now seen corresponding path program 362 times [2021-06-05 20:59:37,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:37,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551642348] [2021-06-05 20:59:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:37,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:37,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551642348] [2021-06-05 20:59:37,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551642348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:37,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:37,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:37,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004701053] [2021-06-05 20:59:37,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:37,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:37,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:37,505 INFO L87 Difference]: Start difference. First operand 1829 states and 7402 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:37,559 INFO L93 Difference]: Finished difference Result 4046 states and 15365 transitions. [2021-06-05 20:59:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:37,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:37,567 INFO L225 Difference]: With dead ends: 4046 [2021-06-05 20:59:37,567 INFO L226 Difference]: Without dead ends: 3684 [2021-06-05 20:59:37,567 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-05 20:59:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1785. [2021-06-05 20:59:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.051569506726457) internal successors, (7228), 1784 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7228 transitions. [2021-06-05 20:59:37,614 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7228 transitions. Word has length 25 [2021-06-05 20:59:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:37,614 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7228 transitions. [2021-06-05 20:59:37,614 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) [2021-06-05 20:59:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7228 transitions. [2021-06-05 20:59:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:37,617 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:37,617 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:37,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 20:59:37,617 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash 406316601, now seen corresponding path program 363 times [2021-06-05 20:59:37,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:37,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358724687] [2021-06-05 20:59:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:37,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:37,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358724687] [2021-06-05 20:59:37,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358724687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:37,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:37,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:37,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130859758] [2021-06-05 20:59:37,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:37,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:37,697 INFO L87 Difference]: Start difference. First operand 1785 states and 7228 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:37,749 INFO L93 Difference]: Finished difference Result 3924 states and 14921 transitions. [2021-06-05 20:59:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:37,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:37,757 INFO L225 Difference]: With dead ends: 3924 [2021-06-05 20:59:37,757 INFO L226 Difference]: Without dead ends: 3677 [2021-06-05 20:59:37,758 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-06-05 20:59:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1813. [2021-06-05 20:59:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.037527593818985) internal successors, (7316), 1812 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7316 transitions. [2021-06-05 20:59:37,805 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7316 transitions. Word has length 25 [2021-06-05 20:59:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:37,805 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7316 transitions. [2021-06-05 20:59:37,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7316 transitions. [2021-06-05 20:59:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:37,808 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:37,808 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:37,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 20:59:37,808 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1162611941, now seen corresponding path program 364 times [2021-06-05 20:59:37,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:37,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135523961] [2021-06-05 20:59:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:37,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:37,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135523961] [2021-06-05 20:59:37,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135523961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:37,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:37,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:37,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154626720] [2021-06-05 20:59:37,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:37,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:37,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:37,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:37,889 INFO L87 Difference]: Start difference. First operand 1813 states and 7316 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:37,953 INFO L93 Difference]: Finished difference Result 3960 states and 15041 transitions. [2021-06-05 20:59:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:37,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:37,961 INFO L225 Difference]: With dead ends: 3960 [2021-06-05 20:59:37,961 INFO L226 Difference]: Without dead ends: 3649 [2021-06-05 20:59:37,961 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2021-06-05 20:59:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1785. [2021-06-05 20:59:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.04372197309417) internal successors, (7214), 1784 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7214 transitions. [2021-06-05 20:59:38,008 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7214 transitions. Word has length 25 [2021-06-05 20:59:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:38,008 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7214 transitions. [2021-06-05 20:59:38,008 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) [2021-06-05 20:59:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7214 transitions. [2021-06-05 20:59:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:38,011 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:38,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:38,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 20:59:38,011 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1800775427, now seen corresponding path program 365 times [2021-06-05 20:59:38,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:38,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523070813] [2021-06-05 20:59:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:38,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:38,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523070813] [2021-06-05 20:59:38,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523070813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:38,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:38,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:38,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508115770] [2021-06-05 20:59:38,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:38,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:38,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:38,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:38,083 INFO L87 Difference]: Start difference. First operand 1785 states and 7214 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:38,155 INFO L93 Difference]: Finished difference Result 4065 states and 15469 transitions. [2021-06-05 20:59:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:38,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:38,162 INFO L225 Difference]: With dead ends: 4065 [2021-06-05 20:59:38,162 INFO L226 Difference]: Without dead ends: 3782 [2021-06-05 20:59:38,163 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-05 20:59:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 1847. [2021-06-05 20:59:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.02546045503792) internal successors, (7431), 1846 states have internal predecessors, (7431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7431 transitions. [2021-06-05 20:59:38,210 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7431 transitions. Word has length 25 [2021-06-05 20:59:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:38,211 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7431 transitions. [2021-06-05 20:59:38,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7431 transitions. [2021-06-05 20:59:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:38,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:38,213 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:38,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 20:59:38,213 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2141052379, now seen corresponding path program 366 times [2021-06-05 20:59:38,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:38,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564850573] [2021-06-05 20:59:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:38,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:38,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564850573] [2021-06-05 20:59:38,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564850573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:38,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:38,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:38,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228232630] [2021-06-05 20:59:38,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:38,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:38,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:38,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:38,320 INFO L87 Difference]: Start difference. First operand 1847 states and 7431 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:38,380 INFO L93 Difference]: Finished difference Result 4100 states and 15542 transitions. [2021-06-05 20:59:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:38,388 INFO L225 Difference]: With dead ends: 4100 [2021-06-05 20:59:38,388 INFO L226 Difference]: Without dead ends: 3698 [2021-06-05 20:59:38,388 INFO L810 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 [2021-06-05 20:59:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-05 20:59:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 1763. [2021-06-05 20:59:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.052780930760499) internal successors, (7141), 1762 states have internal predecessors, (7141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7141 transitions. [2021-06-05 20:59:38,435 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7141 transitions. Word has length 25 [2021-06-05 20:59:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:38,435 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7141 transitions. [2021-06-05 20:59:38,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7141 transitions. [2021-06-05 20:59:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:38,437 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:38,437 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:38,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 20:59:38,437 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:38,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1456697947, now seen corresponding path program 367 times [2021-06-05 20:59:38,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:38,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006379785] [2021-06-05 20:59:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:38,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:38,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006379785] [2021-06-05 20:59:38,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006379785] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:38,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:38,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:38,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008163340] [2021-06-05 20:59:38,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:38,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:38,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:38,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:38,516 INFO L87 Difference]: Start difference. First operand 1763 states and 7141 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:38,565 INFO L93 Difference]: Finished difference Result 3903 states and 14806 transitions. [2021-06-05 20:59:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:38,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:38,573 INFO L225 Difference]: With dead ends: 3903 [2021-06-05 20:59:38,573 INFO L226 Difference]: Without dead ends: 3656 [2021-06-05 20:59:38,573 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-06-05 20:59:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1823. [2021-06-05 20:59:38,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.042261251372119) internal successors, (7365), 1822 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7365 transitions. [2021-06-05 20:59:38,620 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7365 transitions. Word has length 25 [2021-06-05 20:59:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:38,620 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7365 transitions. [2021-06-05 20:59:38,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7365 transitions. [2021-06-05 20:59:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:38,623 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:38,623 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:38,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 20:59:38,623 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:38,623 INFO L82 PathProgramCache]: Analyzing trace with hash -175249219, now seen corresponding path program 368 times [2021-06-05 20:59:38,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:38,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236820307] [2021-06-05 20:59:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:38,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:38,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236820307] [2021-06-05 20:59:38,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236820307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:38,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:38,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:38,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972980762] [2021-06-05 20:59:38,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:38,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:38,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:38,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:38,701 INFO L87 Difference]: Start difference. First operand 1823 states and 7365 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:38,748 INFO L93 Difference]: Finished difference Result 3974 states and 15045 transitions. [2021-06-05 20:59:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:38,755 INFO L225 Difference]: With dead ends: 3974 [2021-06-05 20:59:38,755 INFO L226 Difference]: Without dead ends: 3612 [2021-06-05 20:59:38,756 INFO L810 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 [2021-06-05 20:59:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2021-06-05 20:59:38,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 1779. [2021-06-05 20:59:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 4.047806524184477) internal successors, (7197), 1778 states have internal predecessors, (7197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 7197 transitions. [2021-06-05 20:59:38,802 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 7197 transitions. Word has length 25 [2021-06-05 20:59:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:38,802 INFO L482 AbstractCegarLoop]: Abstraction has 1779 states and 7197 transitions. [2021-06-05 20:59:38,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 7197 transitions. [2021-06-05 20:59:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:38,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:38,804 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:38,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 20:59:38,804 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:38,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1783830073, now seen corresponding path program 369 times [2021-06-05 20:59:38,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:38,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751525041] [2021-06-05 20:59:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:38,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:38,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751525041] [2021-06-05 20:59:38,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751525041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:38,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:38,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:38,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274462927] [2021-06-05 20:59:38,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:38,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:38,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:38,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:38,895 INFO L87 Difference]: Start difference. First operand 1779 states and 7197 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:38,947 INFO L93 Difference]: Finished difference Result 3804 states and 14407 transitions. [2021-06-05 20:59:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:38,954 INFO L225 Difference]: With dead ends: 3804 [2021-06-05 20:59:38,954 INFO L226 Difference]: Without dead ends: 3557 [2021-06-05 20:59:38,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-06-05 20:59:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 1795. [2021-06-05 20:59:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.038461538461538) internal successors, (7245), 1794 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7245 transitions. [2021-06-05 20:59:39,004 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7245 transitions. Word has length 25 [2021-06-05 20:59:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:39,004 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7245 transitions. [2021-06-05 20:59:39,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7245 transitions. [2021-06-05 20:59:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:39,007 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:39,007 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:39,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 20:59:39,007 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:39,007 INFO L82 PathProgramCache]: Analyzing trace with hash 235907739, now seen corresponding path program 370 times [2021-06-05 20:59:39,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:39,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2455652] [2021-06-05 20:59:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:39,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:39,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2455652] [2021-06-05 20:59:39,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2455652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:39,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:39,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:39,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641645788] [2021-06-05 20:59:39,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:39,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:39,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:39,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:39,082 INFO L87 Difference]: Start difference. First operand 1795 states and 7245 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:39,141 INFO L93 Difference]: Finished difference Result 3804 states and 14391 transitions. [2021-06-05 20:59:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:39,148 INFO L225 Difference]: With dead ends: 3804 [2021-06-05 20:59:39,149 INFO L226 Difference]: Without dead ends: 3541 [2021-06-05 20:59:39,149 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-06-05 20:59:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 1779. [2021-06-05 20:59:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 4.043307086614173) internal successors, (7189), 1778 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 7189 transitions. [2021-06-05 20:59:39,194 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 7189 transitions. Word has length 25 [2021-06-05 20:59:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:39,194 INFO L482 AbstractCegarLoop]: Abstraction has 1779 states and 7189 transitions. [2021-06-05 20:59:39,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 7189 transitions. [2021-06-05 20:59:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:39,197 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:39,197 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:39,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 20:59:39,197 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:39,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:39,197 INFO L82 PathProgramCache]: Analyzing trace with hash -402255747, now seen corresponding path program 371 times [2021-06-05 20:59:39,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:39,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518880462] [2021-06-05 20:59:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:39,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:39,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518880462] [2021-06-05 20:59:39,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518880462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:39,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:39,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:39,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930263996] [2021-06-05 20:59:39,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:39,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:39,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:39,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:39,278 INFO L87 Difference]: Start difference. First operand 1779 states and 7189 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:39,335 INFO L93 Difference]: Finished difference Result 3903 states and 14782 transitions. [2021-06-05 20:59:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:39,342 INFO L225 Difference]: With dead ends: 3903 [2021-06-05 20:59:39,343 INFO L226 Difference]: Without dead ends: 3656 [2021-06-05 20:59:39,343 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-06-05 20:59:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1823. [2021-06-05 20:59:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.0290889132821075) internal successors, (7341), 1822 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7341 transitions. [2021-06-05 20:59:39,398 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7341 transitions. Word has length 25 [2021-06-05 20:59:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:39,398 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7341 transitions. [2021-06-05 20:59:39,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7341 transitions. [2021-06-05 20:59:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:39,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:39,401 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:39,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 20:59:39,401 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1406587685, now seen corresponding path program 372 times [2021-06-05 20:59:39,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:39,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817999405] [2021-06-05 20:59:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:39,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:39,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817999405] [2021-06-05 20:59:39,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817999405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:39,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:39,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:39,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297698992] [2021-06-05 20:59:39,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:39,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:39,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:39,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:39,484 INFO L87 Difference]: Start difference. First operand 1823 states and 7341 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:39,534 INFO L93 Difference]: Finished difference Result 3974 states and 15021 transitions. [2021-06-05 20:59:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:39,534 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 [2021-06-05 20:59:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:39,541 INFO L225 Difference]: With dead ends: 3974 [2021-06-05 20:59:39,541 INFO L226 Difference]: Without dead ends: 3596 [2021-06-05 20:59:39,541 INFO L810 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 [2021-06-05 20:59:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2021-06-05 20:59:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 1763. [2021-06-05 20:59:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.048240635641316) internal successors, (7133), 1762 states have internal predecessors, (7133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7133 transitions. [2021-06-05 20:59:39,588 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7133 transitions. Word has length 25 [2021-06-05 20:59:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:39,588 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7133 transitions. [2021-06-05 20:59:39,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7133 transitions. [2021-06-05 20:59:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:39,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:39,590 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:39,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 20:59:39,591 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:39,592 INFO L82 PathProgramCache]: Analyzing trace with hash 276168185, now seen corresponding path program 373 times [2021-06-05 20:59:39,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:39,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480452735] [2021-06-05 20:59:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:39,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:39,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480452735] [2021-06-05 20:59:39,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480452735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:39,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:39,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:39,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347487964] [2021-06-05 20:59:39,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:39,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:39,674 INFO L87 Difference]: Start difference. First operand 1763 states and 7133 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:39,723 INFO L93 Difference]: Finished difference Result 3777 states and 14332 transitions. [2021-06-05 20:59:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:39,724 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 [2021-06-05 20:59:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:39,731 INFO L225 Difference]: With dead ends: 3777 [2021-06-05 20:59:39,731 INFO L226 Difference]: Without dead ends: 3530 [2021-06-05 20:59:39,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2021-06-05 20:59:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 1799. [2021-06-05 20:59:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 4.03615127919911) internal successors, (7257), 1798 states have internal predecessors, (7257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 7257 transitions. [2021-06-05 20:59:39,777 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 7257 transitions. Word has length 25 [2021-06-05 20:59:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:39,777 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 7257 transitions. [2021-06-05 20:59:39,777 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) [2021-06-05 20:59:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 7257 transitions. [2021-06-05 20:59:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:39,780 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:39,780 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:39,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 20:59:39,780 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1292760357, now seen corresponding path program 374 times [2021-06-05 20:59:39,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:39,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482194617] [2021-06-05 20:59:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:39,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:39,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482194617] [2021-06-05 20:59:39,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482194617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:39,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:39,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:39,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962333617] [2021-06-05 20:59:39,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:39,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:39,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:39,853 INFO L87 Difference]: Start difference. First operand 1799 states and 7257 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:39,919 INFO L93 Difference]: Finished difference Result 3813 states and 14452 transitions. [2021-06-05 20:59:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:39,926 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 20:59:39,926 INFO L226 Difference]: Without dead ends: 3502 [2021-06-05 20:59:39,926 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2021-06-05 20:59:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 1771. [2021-06-05 20:59:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1770 states have (on average 4.045762711864406) internal successors, (7161), 1770 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 7161 transitions. [2021-06-05 20:59:39,973 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 7161 transitions. Word has length 25 [2021-06-05 20:59:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:39,973 INFO L482 AbstractCegarLoop]: Abstraction has 1771 states and 7161 transitions. [2021-06-05 20:59:39,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 7161 transitions. [2021-06-05 20:59:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:39,975 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:39,975 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:39,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 20:59:39,975 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:39,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1357230811, now seen corresponding path program 375 times [2021-06-05 20:59:39,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:39,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783389699] [2021-06-05 20:59:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:40,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:40,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783389699] [2021-06-05 20:59:40,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783389699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:40,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:40,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:40,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788188333] [2021-06-05 20:59:40,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:40,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:40,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:40,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:40,041 INFO L87 Difference]: Start difference. First operand 1771 states and 7161 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:40,097 INFO L93 Difference]: Finished difference Result 3729 states and 14124 transitions. [2021-06-05 20:59:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:40,104 INFO L225 Difference]: With dead ends: 3729 [2021-06-05 20:59:40,104 INFO L226 Difference]: Without dead ends: 3482 [2021-06-05 20:59:40,104 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-06-05 20:59:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 1787. [2021-06-05 20:59:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 4.036394176931691) internal successors, (7209), 1786 states have internal predecessors, (7209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 7209 transitions. [2021-06-05 20:59:40,150 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 7209 transitions. Word has length 25 [2021-06-05 20:59:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:40,150 INFO L482 AbstractCegarLoop]: Abstraction has 1787 states and 7209 transitions. [2021-06-05 20:59:40,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 7209 transitions. [2021-06-05 20:59:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:40,153 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:40,153 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:40,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 20:59:40,153 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1908432293, now seen corresponding path program 376 times [2021-06-05 20:59:40,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:40,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670214808] [2021-06-05 20:59:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:40,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:40,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670214808] [2021-06-05 20:59:40,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670214808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:40,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:40,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:40,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120288199] [2021-06-05 20:59:40,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:40,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:40,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:40,220 INFO L87 Difference]: Start difference. First operand 1787 states and 7209 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:40,283 INFO L93 Difference]: Finished difference Result 3729 states and 14108 transitions. [2021-06-05 20:59:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:40,283 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 [2021-06-05 20:59:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:40,290 INFO L225 Difference]: With dead ends: 3729 [2021-06-05 20:59:40,290 INFO L226 Difference]: Without dead ends: 3466 [2021-06-05 20:59:40,290 INFO L810 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 [2021-06-05 20:59:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2021-06-05 20:59:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 1771. [2021-06-05 20:59:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1770 states have (on average 4.041242937853108) internal successors, (7153), 1770 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 7153 transitions. [2021-06-05 20:59:40,335 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 7153 transitions. Word has length 25 [2021-06-05 20:59:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:40,335 INFO L482 AbstractCegarLoop]: Abstraction has 1771 states and 7153 transitions. [2021-06-05 20:59:40,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 7153 transitions. [2021-06-05 20:59:40,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:40,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:40,338 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:40,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 20:59:40,338 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1507528381, now seen corresponding path program 377 times [2021-06-05 20:59:40,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:40,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773992371] [2021-06-05 20:59:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:40,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:40,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773992371] [2021-06-05 20:59:40,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773992371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:40,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:40,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:40,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205629292] [2021-06-05 20:59:40,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:40,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:40,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:40,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:40,413 INFO L87 Difference]: Start difference. First operand 1771 states and 7153 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:40,477 INFO L93 Difference]: Finished difference Result 3813 states and 14464 transitions. [2021-06-05 20:59:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:40,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:40,485 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 20:59:40,485 INFO L226 Difference]: Without dead ends: 3530 [2021-06-05 20:59:40,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2021-06-05 20:59:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 1799. [2021-06-05 20:59:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 4.027252502780867) internal successors, (7241), 1798 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 7241 transitions. [2021-06-05 20:59:40,535 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 7241 transitions. Word has length 25 [2021-06-05 20:59:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:40,535 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 7241 transitions. [2021-06-05 20:59:40,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 7241 transitions. [2021-06-05 20:59:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:40,538 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:40,538 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:40,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 20:59:40,538 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash -535808613, now seen corresponding path program 378 times [2021-06-05 20:59:40,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:40,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616255157] [2021-06-05 20:59:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:40,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:40,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616255157] [2021-06-05 20:59:40,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616255157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:40,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:40,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:40,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37182098] [2021-06-05 20:59:40,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:40,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:40,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:40,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:40,604 INFO L87 Difference]: Start difference. First operand 1799 states and 7241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:40,668 INFO L93 Difference]: Finished difference Result 3777 states and 14288 transitions. [2021-06-05 20:59:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:40,669 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 [2021-06-05 20:59:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:40,676 INFO L225 Difference]: With dead ends: 3777 [2021-06-05 20:59:40,676 INFO L226 Difference]: Without dead ends: 3494 [2021-06-05 20:59:40,676 INFO L810 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 [2021-06-05 20:59:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-06-05 20:59:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 1763. [2021-06-05 20:59:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.045970488081725) internal successors, (7129), 1762 states have internal predecessors, (7129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7129 transitions. [2021-06-05 20:59:40,721 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7129 transitions. Word has length 25 [2021-06-05 20:59:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:40,721 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7129 transitions. [2021-06-05 20:59:40,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7129 transitions. [2021-06-05 20:59:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:40,723 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:40,723 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:40,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 20:59:40,724 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1882225633, now seen corresponding path program 379 times [2021-06-05 20:59:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:40,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890284670] [2021-06-05 20:59:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:40,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:40,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890284670] [2021-06-05 20:59:40,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890284670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:40,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:40,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:40,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559956425] [2021-06-05 20:59:40,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:40,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:40,788 INFO L87 Difference]: Start difference. First operand 1763 states and 7129 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:40,854 INFO L93 Difference]: Finished difference Result 3960 states and 15071 transitions. [2021-06-05 20:59:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:40,862 INFO L225 Difference]: With dead ends: 3960 [2021-06-05 20:59:40,862 INFO L226 Difference]: Without dead ends: 3677 [2021-06-05 20:59:40,862 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-06-05 20:59:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1813. [2021-06-05 20:59:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.0386313465783665) internal successors, (7318), 1812 states have internal predecessors, (7318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7318 transitions. [2021-06-05 20:59:40,908 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7318 transitions. Word has length 25 [2021-06-05 20:59:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:40,908 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7318 transitions. [2021-06-05 20:59:40,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7318 transitions. [2021-06-05 20:59:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:40,911 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:40,911 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:40,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 20:59:40,911 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash 369404669, now seen corresponding path program 380 times [2021-06-05 20:59:40,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:40,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787304367] [2021-06-05 20:59:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:40,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:40,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787304367] [2021-06-05 20:59:40,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787304367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:40,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:40,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:40,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602931829] [2021-06-05 20:59:40,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:40,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:40,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:40,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:40,981 INFO L87 Difference]: Start difference. First operand 1813 states and 7318 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:41,052 INFO L93 Difference]: Finished difference Result 3924 states and 14895 transitions. [2021-06-05 20:59:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:41,060 INFO L225 Difference]: With dead ends: 3924 [2021-06-05 20:59:41,060 INFO L226 Difference]: Without dead ends: 3649 [2021-06-05 20:59:41,060 INFO L810 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 [2021-06-05 20:59:41,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2021-06-05 20:59:41,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1785. [2021-06-05 20:59:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.044843049327354) internal successors, (7216), 1784 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7216 transitions. [2021-06-05 20:59:41,107 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7216 transitions. Word has length 25 [2021-06-05 20:59:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:41,107 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7216 transitions. [2021-06-05 20:59:41,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7216 transitions. [2021-06-05 20:59:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:41,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:41,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:41,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 20:59:41,110 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:41,110 INFO L82 PathProgramCache]: Analyzing trace with hash -677576451, now seen corresponding path program 381 times [2021-06-05 20:59:41,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:41,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889671971] [2021-06-05 20:59:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:41,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:41,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889671971] [2021-06-05 20:59:41,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889671971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:41,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:41,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:41,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273231830] [2021-06-05 20:59:41,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:41,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:41,182 INFO L87 Difference]: Start difference. First operand 1785 states and 7216 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:41,247 INFO L93 Difference]: Finished difference Result 4065 states and 15471 transitions. [2021-06-05 20:59:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:41,247 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 [2021-06-05 20:59:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:41,255 INFO L225 Difference]: With dead ends: 4065 [2021-06-05 20:59:41,255 INFO L226 Difference]: Without dead ends: 3782 [2021-06-05 20:59:41,255 INFO L810 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 [2021-06-05 20:59:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-05 20:59:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 1847. [2021-06-05 20:59:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.026543878656555) internal successors, (7433), 1846 states have internal predecessors, (7433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7433 transitions. [2021-06-05 20:59:41,313 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7433 transitions. Word has length 25 [2021-06-05 20:59:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:41,314 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7433 transitions. [2021-06-05 20:59:41,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7433 transitions. [2021-06-05 20:59:41,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:41,316 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:41,316 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:41,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 20:59:41,316 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:41,317 INFO L82 PathProgramCache]: Analyzing trace with hash -596686595, now seen corresponding path program 382 times [2021-06-05 20:59:41,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:41,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922815215] [2021-06-05 20:59:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:41,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:41,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922815215] [2021-06-05 20:59:41,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922815215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:41,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:41,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:41,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403604397] [2021-06-05 20:59:41,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:41,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:41,382 INFO L87 Difference]: Start difference. First operand 1847 states and 7433 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:41,434 INFO L93 Difference]: Finished difference Result 4100 states and 15544 transitions. [2021-06-05 20:59:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:41,434 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 [2021-06-05 20:59:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:41,442 INFO L225 Difference]: With dead ends: 4100 [2021-06-05 20:59:41,442 INFO L226 Difference]: Without dead ends: 3720 [2021-06-05 20:59:41,442 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-06-05 20:59:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1785. [2021-06-05 20:59:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.0325112107623315) internal successors, (7194), 1784 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7194 transitions. [2021-06-05 20:59:41,489 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7194 transitions. Word has length 25 [2021-06-05 20:59:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:41,489 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7194 transitions. [2021-06-05 20:59:41,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7194 transitions. [2021-06-05 20:59:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:41,491 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:41,491 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:41,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 20:59:41,491 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:41,491 INFO L82 PathProgramCache]: Analyzing trace with hash 304771163, now seen corresponding path program 383 times [2021-06-05 20:59:41,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:41,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414811111] [2021-06-05 20:59:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:41,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:41,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414811111] [2021-06-05 20:59:41,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414811111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:41,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:41,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:41,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903422342] [2021-06-05 20:59:41,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:41,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:41,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:41,577 INFO L87 Difference]: Start difference. First operand 1785 states and 7194 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:41,640 INFO L93 Difference]: Finished difference Result 3975 states and 15070 transitions. [2021-06-05 20:59:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:41,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:41,647 INFO L225 Difference]: With dead ends: 3975 [2021-06-05 20:59:41,647 INFO L226 Difference]: Without dead ends: 3728 [2021-06-05 20:59:41,648 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-05 20:59:41,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 1829. [2021-06-05 20:59:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 4.018599562363239) internal successors, (7346), 1828 states have internal predecessors, (7346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 7346 transitions. [2021-06-05 20:59:41,695 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 7346 transitions. Word has length 25 [2021-06-05 20:59:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:41,695 INFO L482 AbstractCegarLoop]: Abstraction has 1829 states and 7346 transitions. [2021-06-05 20:59:41,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 7346 transitions. [2021-06-05 20:59:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:41,697 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:41,697 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:41,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 20:59:41,697 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:41,697 INFO L82 PathProgramCache]: Analyzing trace with hash -764747843, now seen corresponding path program 384 times [2021-06-05 20:59:41,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:41,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78521938] [2021-06-05 20:59:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:41,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:41,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78521938] [2021-06-05 20:59:41,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78521938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:41,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:41,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:41,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282361128] [2021-06-05 20:59:41,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:41,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:41,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:41,782 INFO L87 Difference]: Start difference. First operand 1829 states and 7346 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:41,832 INFO L93 Difference]: Finished difference Result 4046 states and 15309 transitions. [2021-06-05 20:59:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:41,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:41,839 INFO L225 Difference]: With dead ends: 4046 [2021-06-05 20:59:41,839 INFO L226 Difference]: Without dead ends: 3654 [2021-06-05 20:59:41,839 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2021-06-05 20:59:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 1755. [2021-06-05 20:59:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 4.050741163055872) internal successors, (7105), 1754 states have internal predecessors, (7105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 7105 transitions. [2021-06-05 20:59:41,885 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 7105 transitions. Word has length 25 [2021-06-05 20:59:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:41,885 INFO L482 AbstractCegarLoop]: Abstraction has 1755 states and 7105 transitions. [2021-06-05 20:59:41,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 7105 transitions. [2021-06-05 20:59:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:41,888 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:41,888 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:41,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 20:59:41,888 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1996882395, now seen corresponding path program 385 times [2021-06-05 20:59:41,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:41,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648398471] [2021-06-05 20:59:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:41,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:41,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648398471] [2021-06-05 20:59:41,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648398471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:41,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:41,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:41,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542231522] [2021-06-05 20:59:41,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:41,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:41,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:41,975 INFO L87 Difference]: Start difference. First operand 1755 states and 7105 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:42,028 INFO L93 Difference]: Finished difference Result 3993 states and 15211 transitions. [2021-06-05 20:59:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:42,037 INFO L225 Difference]: With dead ends: 3993 [2021-06-05 20:59:42,037 INFO L226 Difference]: Without dead ends: 3746 [2021-06-05 20:59:42,037 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-06-05 20:59:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 1799. [2021-06-05 20:59:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 4.03615127919911) internal successors, (7257), 1798 states have internal predecessors, (7257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 7257 transitions. [2021-06-05 20:59:42,084 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 7257 transitions. Word has length 25 [2021-06-05 20:59:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:42,085 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 7257 transitions. [2021-06-05 20:59:42,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 7257 transitions. [2021-06-05 20:59:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:42,087 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:42,087 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:42,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 20:59:42,087 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:42,087 INFO L82 PathProgramCache]: Analyzing trace with hash 364935229, now seen corresponding path program 386 times [2021-06-05 20:59:42,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:42,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811456308] [2021-06-05 20:59:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:42,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:42,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811456308] [2021-06-05 20:59:42,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811456308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:42,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:42,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:42,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866930252] [2021-06-05 20:59:42,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:42,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:42,164 INFO L87 Difference]: Start difference. First operand 1799 states and 7257 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:42,219 INFO L93 Difference]: Finished difference Result 4064 states and 15450 transitions. [2021-06-05 20:59:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:42,219 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 [2021-06-05 20:59:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:42,227 INFO L225 Difference]: With dead ends: 4064 [2021-06-05 20:59:42,227 INFO L226 Difference]: Without dead ends: 3702 [2021-06-05 20:59:42,227 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2021-06-05 20:59:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 1755. [2021-06-05 20:59:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 4.038198403648803) internal successors, (7083), 1754 states have internal predecessors, (7083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 7083 transitions. [2021-06-05 20:59:42,275 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 7083 transitions. Word has length 25 [2021-06-05 20:59:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:42,275 INFO L482 AbstractCegarLoop]: Abstraction has 1755 states and 7083 transitions. [2021-06-05 20:59:42,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 7083 transitions. [2021-06-05 20:59:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:42,277 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:42,277 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:42,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 20:59:42,278 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1638864485, now seen corresponding path program 387 times [2021-06-05 20:59:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:42,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109837544] [2021-06-05 20:59:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:42,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:42,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109837544] [2021-06-05 20:59:42,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109837544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:42,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:42,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:42,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441552356] [2021-06-05 20:59:42,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:42,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:42,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:42,358 INFO L87 Difference]: Start difference. First operand 1755 states and 7083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:42,412 INFO L93 Difference]: Finished difference Result 3942 states and 15006 transitions. [2021-06-05 20:59:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:42,412 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 [2021-06-05 20:59:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:42,420 INFO L225 Difference]: With dead ends: 3942 [2021-06-05 20:59:42,420 INFO L226 Difference]: Without dead ends: 3695 [2021-06-05 20:59:42,420 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-06-05 20:59:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 1783. [2021-06-05 20:59:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.024130190796858) internal successors, (7171), 1782 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7171 transitions. [2021-06-05 20:59:42,467 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7171 transitions. Word has length 25 [2021-06-05 20:59:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:42,467 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7171 transitions. [2021-06-05 20:59:42,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7171 transitions. [2021-06-05 20:59:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:42,469 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:42,470 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:42,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 20:59:42,470 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:42,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:42,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1087174269, now seen corresponding path program 388 times [2021-06-05 20:59:42,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:42,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955554032] [2021-06-05 20:59:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:42,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:42,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955554032] [2021-06-05 20:59:42,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955554032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:42,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:42,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:42,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619875833] [2021-06-05 20:59:42,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:42,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:42,550 INFO L87 Difference]: Start difference. First operand 1783 states and 7171 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:42,630 INFO L93 Difference]: Finished difference Result 3978 states and 15126 transitions. [2021-06-05 20:59:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:42,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:42,638 INFO L225 Difference]: With dead ends: 3978 [2021-06-05 20:59:42,638 INFO L226 Difference]: Without dead ends: 3667 [2021-06-05 20:59:42,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2021-06-05 20:59:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 1755. [2021-06-05 20:59:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 4.030216647662486) internal successors, (7069), 1754 states have internal predecessors, (7069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 7069 transitions. [2021-06-05 20:59:42,684 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 7069 transitions. Word has length 25 [2021-06-05 20:59:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:42,684 INFO L482 AbstractCegarLoop]: Abstraction has 1755 states and 7069 transitions. [2021-06-05 20:59:42,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 7069 transitions. [2021-06-05 20:59:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:42,686 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:42,686 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:42,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 20:59:42,686 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:42,687 INFO L82 PathProgramCache]: Analyzing trace with hash 449010783, now seen corresponding path program 389 times [2021-06-05 20:59:42,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:42,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074081919] [2021-06-05 20:59:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:42,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:42,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074081919] [2021-06-05 20:59:42,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074081919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:42,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:42,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:42,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701004133] [2021-06-05 20:59:42,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:42,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:42,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:42,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:42,757 INFO L87 Difference]: Start difference. First operand 1755 states and 7069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:42,814 INFO L93 Difference]: Finished difference Result 4083 states and 15554 transitions. [2021-06-05 20:59:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:42,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:42,822 INFO L225 Difference]: With dead ends: 4083 [2021-06-05 20:59:42,822 INFO L226 Difference]: Without dead ends: 3800 [2021-06-05 20:59:42,822 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-06-05 20:59:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 1817. [2021-06-05 20:59:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.012114537444934) internal successors, (7286), 1816 states have internal predecessors, (7286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7286 transitions. [2021-06-05 20:59:42,869 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7286 transitions. Word has length 25 [2021-06-05 20:59:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:42,870 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7286 transitions. [2021-06-05 20:59:42,870 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) [2021-06-05 20:59:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7286 transitions. [2021-06-05 20:59:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:42,872 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:42,872 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:42,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 20:59:42,872 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:42,872 INFO L82 PathProgramCache]: Analyzing trace with hash 95871293, now seen corresponding path program 390 times [2021-06-05 20:59:42,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:42,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12913033] [2021-06-05 20:59:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:42,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:42,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12913033] [2021-06-05 20:59:42,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12913033] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:42,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:42,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:42,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535886047] [2021-06-05 20:59:42,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:42,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:42,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:42,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:42,956 INFO L87 Difference]: Start difference. First operand 1817 states and 7286 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:43,006 INFO L93 Difference]: Finished difference Result 4118 states and 15627 transitions. [2021-06-05 20:59:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:43,014 INFO L225 Difference]: With dead ends: 4118 [2021-06-05 20:59:43,014 INFO L226 Difference]: Without dead ends: 3716 [2021-06-05 20:59:43,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2021-06-05 20:59:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 1733. [2021-06-05 20:59:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 4.03810623556582) internal successors, (6994), 1732 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6994 transitions. [2021-06-05 20:59:43,059 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6994 transitions. Word has length 25 [2021-06-05 20:59:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:43,059 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6994 transitions. [2021-06-05 20:59:43,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6994 transitions. [2021-06-05 20:59:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:43,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:43,062 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:43,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 20:59:43,062 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash 74541531, now seen corresponding path program 391 times [2021-06-05 20:59:43,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:43,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27717965] [2021-06-05 20:59:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:43,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:43,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27717965] [2021-06-05 20:59:43,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27717965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:43,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:43,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:43,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713150374] [2021-06-05 20:59:43,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:43,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:43,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:43,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:43,159 INFO L87 Difference]: Start difference. First operand 1733 states and 6994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:43,225 INFO L93 Difference]: Finished difference Result 3913 states and 14877 transitions. [2021-06-05 20:59:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:43,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:43,232 INFO L225 Difference]: With dead ends: 3913 [2021-06-05 20:59:43,232 INFO L226 Difference]: Without dead ends: 3666 [2021-06-05 20:59:43,233 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-06-05 20:59:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1797. [2021-06-05 20:59:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.0300668151447665) internal successors, (7238), 1796 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7238 transitions. [2021-06-05 20:59:43,278 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7238 transitions. Word has length 25 [2021-06-05 20:59:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:43,278 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7238 transitions. [2021-06-05 20:59:43,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7238 transitions. [2021-06-05 20:59:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:43,281 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:43,281 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:43,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 20:59:43,281 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1557405635, now seen corresponding path program 392 times [2021-06-05 20:59:43,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:43,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827286553] [2021-06-05 20:59:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:43,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:43,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827286553] [2021-06-05 20:59:43,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827286553] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:43,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:43,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:43,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418199988] [2021-06-05 20:59:43,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:43,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:43,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:43,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:43,360 INFO L87 Difference]: Start difference. First operand 1797 states and 7238 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:43,424 INFO L93 Difference]: Finished difference Result 3984 states and 15116 transitions. [2021-06-05 20:59:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:43,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:43,437 INFO L225 Difference]: With dead ends: 3984 [2021-06-05 20:59:43,437 INFO L226 Difference]: Without dead ends: 3622 [2021-06-05 20:59:43,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-06-05 20:59:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 1753. [2021-06-05 20:59:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 4.03310502283105) internal successors, (7066), 1752 states have internal predecessors, (7066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 7066 transitions. [2021-06-05 20:59:43,483 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 7066 transitions. Word has length 25 [2021-06-05 20:59:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:43,483 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 7066 transitions. [2021-06-05 20:59:43,483 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) [2021-06-05 20:59:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 7066 transitions. [2021-06-05 20:59:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:43,486 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:43,486 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:43,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 20:59:43,486 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:43,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:43,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2087671353, now seen corresponding path program 393 times [2021-06-05 20:59:43,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:43,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374966168] [2021-06-05 20:59:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:43,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:43,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374966168] [2021-06-05 20:59:43,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374966168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:43,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:43,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:43,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894781317] [2021-06-05 20:59:43,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:43,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:43,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:43,559 INFO L87 Difference]: Start difference. First operand 1753 states and 7066 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:43,610 INFO L93 Difference]: Finished difference Result 3782 states and 14378 transitions. [2021-06-05 20:59:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:43,617 INFO L225 Difference]: With dead ends: 3782 [2021-06-05 20:59:43,617 INFO L226 Difference]: Without dead ends: 3535 [2021-06-05 20:59:43,617 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-06-05 20:59:43,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 1777. [2021-06-05 20:59:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.021396396396397) internal successors, (7142), 1776 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7142 transitions. [2021-06-05 20:59:43,662 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7142 transitions. Word has length 25 [2021-06-05 20:59:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:43,662 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7142 transitions. [2021-06-05 20:59:43,662 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) [2021-06-05 20:59:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7142 transitions. [2021-06-05 20:59:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:43,665 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:43,665 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:43,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 20:59:43,665 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:43,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:43,665 INFO L82 PathProgramCache]: Analyzing trace with hash 560755227, now seen corresponding path program 394 times [2021-06-05 20:59:43,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:43,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823072433] [2021-06-05 20:59:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:43,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:43,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823072433] [2021-06-05 20:59:43,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823072433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:43,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:43,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:43,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284880637] [2021-06-05 20:59:43,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:43,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:43,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:43,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:43,738 INFO L87 Difference]: Start difference. First operand 1777 states and 7142 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:43,805 INFO L93 Difference]: Finished difference Result 3606 states and 13801 transitions. [2021-06-05 20:59:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:43,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:43,812 INFO L225 Difference]: With dead ends: 3606 [2021-06-05 20:59:43,812 INFO L226 Difference]: Without dead ends: 3319 [2021-06-05 20:59:43,812 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-06-05 20:59:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 1753. [2021-06-05 20:59:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 4.026255707762557) internal successors, (7054), 1752 states have internal predecessors, (7054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 7054 transitions. [2021-06-05 20:59:43,855 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 7054 transitions. Word has length 25 [2021-06-05 20:59:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:43,855 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 7054 transitions. [2021-06-05 20:59:43,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 7054 transitions. [2021-06-05 20:59:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:43,858 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:43,858 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:43,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 20:59:43,858 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash -77408259, now seen corresponding path program 395 times [2021-06-05 20:59:43,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:43,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406604863] [2021-06-05 20:59:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:43,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:43,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406604863] [2021-06-05 20:59:43,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406604863] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:43,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:43,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:43,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883209181] [2021-06-05 20:59:43,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:43,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:43,942 INFO L87 Difference]: Start difference. First operand 1753 states and 7054 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:44,009 INFO L93 Difference]: Finished difference Result 3953 states and 15029 transitions. [2021-06-05 20:59:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:44,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:44,016 INFO L225 Difference]: With dead ends: 3953 [2021-06-05 20:59:44,016 INFO L226 Difference]: Without dead ends: 3690 [2021-06-05 20:59:44,017 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-06-05 20:59:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 1805. [2021-06-05 20:59:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 4.012195121951219) internal successors, (7238), 1804 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7238 transitions. [2021-06-05 20:59:44,063 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7238 transitions. Word has length 25 [2021-06-05 20:59:44,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:44,063 INFO L482 AbstractCegarLoop]: Abstraction has 1805 states and 7238 transitions. [2021-06-05 20:59:44,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7238 transitions. [2021-06-05 20:59:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:44,065 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:44,065 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:44,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 20:59:44,066 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:44,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1732932645, now seen corresponding path program 396 times [2021-06-05 20:59:44,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:44,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309130126] [2021-06-05 20:59:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:44,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:44,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309130126] [2021-06-05 20:59:44,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309130126] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:44,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:44,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:44,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239283121] [2021-06-05 20:59:44,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:44,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:44,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:44,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:44,150 INFO L87 Difference]: Start difference. First operand 1805 states and 7238 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:44,206 INFO L93 Difference]: Finished difference Result 3881 states and 14717 transitions. [2021-06-05 20:59:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:44,214 INFO L225 Difference]: With dead ends: 3881 [2021-06-05 20:59:44,214 INFO L226 Difference]: Without dead ends: 3491 [2021-06-05 20:59:44,214 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2021-06-05 20:59:44,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 1733. [2021-06-05 20:59:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 4.032332563510392) internal successors, (6984), 1732 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6984 transitions. [2021-06-05 20:59:44,259 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6984 transitions. Word has length 25 [2021-06-05 20:59:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:44,259 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6984 transitions. [2021-06-05 20:59:44,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6984 transitions. [2021-06-05 20:59:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:44,261 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:44,261 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:44,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 20:59:44,261 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:44,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1216687609, now seen corresponding path program 397 times [2021-06-05 20:59:44,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:44,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696193267] [2021-06-05 20:59:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:44,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:44,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696193267] [2021-06-05 20:59:44,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696193267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:44,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:44,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:44,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681259510] [2021-06-05 20:59:44,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:44,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:44,334 INFO L87 Difference]: Start difference. First operand 1733 states and 6984 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:44,390 INFO L93 Difference]: Finished difference Result 3803 states and 14465 transitions. [2021-06-05 20:59:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:44,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:44,397 INFO L225 Difference]: With dead ends: 3803 [2021-06-05 20:59:44,398 INFO L226 Difference]: Without dead ends: 3556 [2021-06-05 20:59:44,398 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2021-06-05 20:59:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 1773. [2021-06-05 20:59:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.022573363431151) internal successors, (7128), 1772 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7128 transitions. [2021-06-05 20:59:44,443 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7128 transitions. Word has length 25 [2021-06-05 20:59:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:44,443 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7128 transitions. [2021-06-05 20:59:44,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7128 transitions. [2021-06-05 20:59:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:44,446 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:44,446 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:44,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 20:59:44,446 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash -352240933, now seen corresponding path program 398 times [2021-06-05 20:59:44,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:44,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085232584] [2021-06-05 20:59:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:44,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:44,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085232584] [2021-06-05 20:59:44,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085232584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:44,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:44,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:44,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758321272] [2021-06-05 20:59:44,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:44,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:44,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:44,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:44,518 INFO L87 Difference]: Start difference. First operand 1773 states and 7128 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:44,587 INFO L93 Difference]: Finished difference Result 3839 states and 14585 transitions. [2021-06-05 20:59:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:44,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:44,594 INFO L225 Difference]: With dead ends: 3839 [2021-06-05 20:59:44,594 INFO L226 Difference]: Without dead ends: 3528 [2021-06-05 20:59:44,594 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-06-05 20:59:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 1745. [2021-06-05 20:59:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 4.029816513761468) internal successors, (7028), 1744 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 7028 transitions. [2021-06-05 20:59:44,639 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 7028 transitions. Word has length 25 [2021-06-05 20:59:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:44,639 INFO L482 AbstractCegarLoop]: Abstraction has 1745 states and 7028 transitions. [2021-06-05 20:59:44,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 7028 transitions. [2021-06-05 20:59:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:44,641 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:44,641 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:44,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 20:59:44,641 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1009879643, now seen corresponding path program 399 times [2021-06-05 20:59:44,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:44,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277386552] [2021-06-05 20:59:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:44,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:44,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277386552] [2021-06-05 20:59:44,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277386552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:44,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:44,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:44,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502600861] [2021-06-05 20:59:44,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:44,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:44,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:44,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:44,708 INFO L87 Difference]: Start difference. First operand 1745 states and 7028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:44,756 INFO L93 Difference]: Finished difference Result 3723 states and 14157 transitions. [2021-06-05 20:59:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:44,756 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 [2021-06-05 20:59:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:44,763 INFO L225 Difference]: With dead ends: 3723 [2021-06-05 20:59:44,763 INFO L226 Difference]: Without dead ends: 3476 [2021-06-05 20:59:44,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2021-06-05 20:59:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 1769. [2021-06-05 20:59:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.018099547511312) internal successors, (7104), 1768 states have internal predecessors, (7104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7104 transitions. [2021-06-05 20:59:44,807 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7104 transitions. Word has length 25 [2021-06-05 20:59:44,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:44,808 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7104 transitions. [2021-06-05 20:59:44,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7104 transitions. [2021-06-05 20:59:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:44,810 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:44,810 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:44,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-05 20:59:44,810 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1583584805, now seen corresponding path program 400 times [2021-06-05 20:59:44,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:44,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438500523] [2021-06-05 20:59:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:44,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:44,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438500523] [2021-06-05 20:59:44,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438500523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:44,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:44,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:44,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593678623] [2021-06-05 20:59:44,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:44,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:44,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:44,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:44,876 INFO L87 Difference]: Start difference. First operand 1769 states and 7104 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:44,933 INFO L93 Difference]: Finished difference Result 3547 states and 13580 transitions. [2021-06-05 20:59:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:44,933 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 [2021-06-05 20:59:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:44,939 INFO L225 Difference]: With dead ends: 3547 [2021-06-05 20:59:44,940 INFO L226 Difference]: Without dead ends: 3260 [2021-06-05 20:59:44,940 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-06-05 20:59:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 1745. [2021-06-05 20:59:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 4.022935779816514) internal successors, (7016), 1744 states have internal predecessors, (7016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 7016 transitions. [2021-06-05 20:59:44,983 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 7016 transitions. Word has length 25 [2021-06-05 20:59:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:44,983 INFO L482 AbstractCegarLoop]: Abstraction has 1745 states and 7016 transitions. [2021-06-05 20:59:44,983 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) [2021-06-05 20:59:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 7016 transitions. [2021-06-05 20:59:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:44,985 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:44,985 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:44,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-05 20:59:44,986 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:44,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1160177213, now seen corresponding path program 401 times [2021-06-05 20:59:44,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:44,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388640552] [2021-06-05 20:59:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:45,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:45,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388640552] [2021-06-05 20:59:45,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388640552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:45,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:45,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:45,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755485272] [2021-06-05 20:59:45,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:45,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:45,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:45,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:45,053 INFO L87 Difference]: Start difference. First operand 1745 states and 7016 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:45,128 INFO L93 Difference]: Finished difference Result 3771 states and 14349 transitions. [2021-06-05 20:59:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:45,128 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 [2021-06-05 20:59:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:45,135 INFO L225 Difference]: With dead ends: 3771 [2021-06-05 20:59:45,135 INFO L226 Difference]: Without dead ends: 3488 [2021-06-05 20:59:45,135 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-06-05 20:59:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 1781. [2021-06-05 20:59:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.008988764044944) internal successors, (7136), 1780 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7136 transitions. [2021-06-05 20:59:45,179 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7136 transitions. Word has length 25 [2021-06-05 20:59:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:45,179 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7136 transitions. [2021-06-05 20:59:45,179 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) [2021-06-05 20:59:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7136 transitions. [2021-06-05 20:59:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:45,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:45,181 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:45,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-05 20:59:45,181 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:45,181 INFO L82 PathProgramCache]: Analyzing trace with hash -231967333, now seen corresponding path program 402 times [2021-06-05 20:59:45,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:45,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975825509] [2021-06-05 20:59:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:45,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:45,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975825509] [2021-06-05 20:59:45,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975825509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:45,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:45,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:45,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000105800] [2021-06-05 20:59:45,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:45,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:45,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:45,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:45,249 INFO L87 Difference]: Start difference. First operand 1781 states and 7136 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:45,307 INFO L93 Difference]: Finished difference Result 3559 states and 13612 transitions. [2021-06-05 20:59:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:45,314 INFO L225 Difference]: With dead ends: 3559 [2021-06-05 20:59:45,314 INFO L226 Difference]: Without dead ends: 3248 [2021-06-05 20:59:45,314 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-06-05 20:59:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 1733. [2021-06-05 20:59:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 4.028868360277136) internal successors, (6978), 1732 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6978 transitions. [2021-06-05 20:59:45,357 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6978 transitions. Word has length 25 [2021-06-05 20:59:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:45,357 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6978 transitions. [2021-06-05 20:59:45,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6978 transitions. [2021-06-05 20:59:45,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:45,359 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:45,359 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:45,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-05 20:59:45,359 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2065390495, now seen corresponding path program 403 times [2021-06-05 20:59:45,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:45,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921282080] [2021-06-05 20:59:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:45,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:45,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921282080] [2021-06-05 20:59:45,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921282080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:45,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:45,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:45,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321191967] [2021-06-05 20:59:45,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:45,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:45,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:45,423 INFO L87 Difference]: Start difference. First operand 1733 states and 6978 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:45,479 INFO L93 Difference]: Finished difference Result 4038 states and 15436 transitions. [2021-06-05 20:59:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:45,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:45,487 INFO L225 Difference]: With dead ends: 4038 [2021-06-05 20:59:45,487 INFO L226 Difference]: Without dead ends: 3755 [2021-06-05 20:59:45,487 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2021-06-05 20:59:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 1795. [2021-06-05 20:59:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.025083612040134) internal successors, (7221), 1794 states have internal predecessors, (7221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7221 transitions. [2021-06-05 20:59:45,534 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7221 transitions. Word has length 25 [2021-06-05 20:59:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:45,534 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7221 transitions. [2021-06-05 20:59:45,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7221 transitions. [2021-06-05 20:59:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:45,537 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:45,537 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:45,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-05 20:59:45,537 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 673245949, now seen corresponding path program 404 times [2021-06-05 20:59:45,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:45,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850066464] [2021-06-05 20:59:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:45,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:45,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850066464] [2021-06-05 20:59:45,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850066464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:45,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:45,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:45,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212089341] [2021-06-05 20:59:45,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:45,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:45,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:45,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:45,619 INFO L87 Difference]: Start difference. First operand 1795 states and 7221 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:45,681 INFO L93 Difference]: Finished difference Result 4018 states and 15324 transitions. [2021-06-05 20:59:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:45,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:45,689 INFO L225 Difference]: With dead ends: 4018 [2021-06-05 20:59:45,689 INFO L226 Difference]: Without dead ends: 3719 [2021-06-05 20:59:45,689 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-06-05 20:59:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 1759. [2021-06-05 20:59:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 4.0290102389078495) internal successors, (7083), 1758 states have internal predecessors, (7083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 7083 transitions. [2021-06-05 20:59:45,735 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 7083 transitions. Word has length 25 [2021-06-05 20:59:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:45,735 INFO L482 AbstractCegarLoop]: Abstraction has 1759 states and 7083 transitions. [2021-06-05 20:59:45,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 7083 transitions. [2021-06-05 20:59:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:45,738 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:45,738 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:45,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-05 20:59:45,738 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:45,738 INFO L82 PathProgramCache]: Analyzing trace with hash 244355069, now seen corresponding path program 405 times [2021-06-05 20:59:45,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:45,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950910852] [2021-06-05 20:59:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:45,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:45,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950910852] [2021-06-05 20:59:45,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950910852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:45,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:45,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:45,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344367480] [2021-06-05 20:59:45,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:45,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:45,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:45,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:45,806 INFO L87 Difference]: Start difference. First operand 1759 states and 7083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:45,864 INFO L93 Difference]: Finished difference Result 4057 states and 15457 transitions. [2021-06-05 20:59:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:45,864 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 [2021-06-05 20:59:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:45,872 INFO L225 Difference]: With dead ends: 4057 [2021-06-05 20:59:45,872 INFO L226 Difference]: Without dead ends: 3774 [2021-06-05 20:59:45,872 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2021-06-05 20:59:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1821. [2021-06-05 20:59:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.010989010989011) internal successors, (7300), 1820 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7300 transitions. [2021-06-05 20:59:45,919 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7300 transitions. Word has length 25 [2021-06-05 20:59:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:45,919 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7300 transitions. [2021-06-05 20:59:45,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7300 transitions. [2021-06-05 20:59:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:45,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:45,922 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:45,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-05 20:59:45,922 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1613115517, now seen corresponding path program 406 times [2021-06-05 20:59:45,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:45,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849402388] [2021-06-05 20:59:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:45,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:45,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849402388] [2021-06-05 20:59:45,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849402388] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:45,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:45,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:45,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483855928] [2021-06-05 20:59:45,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:45,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:45,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:45,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:45,986 INFO L87 Difference]: Start difference. First operand 1821 states and 7300 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:46,033 INFO L93 Difference]: Finished difference Result 4092 states and 15530 transitions. [2021-06-05 20:59:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:46,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:46,040 INFO L225 Difference]: With dead ends: 4092 [2021-06-05 20:59:46,040 INFO L226 Difference]: Without dead ends: 3712 [2021-06-05 20:59:46,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-06-05 20:59:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 1759. [2021-06-05 20:59:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 4.014220705346985) internal successors, (7057), 1758 states have internal predecessors, (7057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 7057 transitions. [2021-06-05 20:59:46,086 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 7057 transitions. Word has length 25 [2021-06-05 20:59:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:46,086 INFO L482 AbstractCegarLoop]: Abstraction has 1759 states and 7057 transitions. [2021-06-05 20:59:46,086 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) [2021-06-05 20:59:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 7057 transitions. [2021-06-05 20:59:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:46,088 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:46,088 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:46,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-05 20:59:46,089 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:46,089 INFO L82 PathProgramCache]: Analyzing trace with hash 608612443, now seen corresponding path program 407 times [2021-06-05 20:59:46,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:46,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216095968] [2021-06-05 20:59:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:46,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:46,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216095968] [2021-06-05 20:59:46,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216095968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:46,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:46,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:46,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881298757] [2021-06-05 20:59:46,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:46,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:46,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:46,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:46,162 INFO L87 Difference]: Start difference. First operand 1759 states and 7057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:46,218 INFO L93 Difference]: Finished difference Result 4007 states and 15236 transitions. [2021-06-05 20:59:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:46,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:46,225 INFO L225 Difference]: With dead ends: 4007 [2021-06-05 20:59:46,226 INFO L226 Difference]: Without dead ends: 3744 [2021-06-05 20:59:46,226 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-06-05 20:59:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 1811. [2021-06-05 20:59:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 4.000552486187845) internal successors, (7241), 1810 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 7241 transitions. [2021-06-05 20:59:46,272 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 7241 transitions. Word has length 25 [2021-06-05 20:59:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:46,273 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 7241 transitions. [2021-06-05 20:59:46,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 7241 transitions. [2021-06-05 20:59:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:46,275 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:46,275 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:46,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-05 20:59:46,275 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash 826964029, now seen corresponding path program 408 times [2021-06-05 20:59:46,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:46,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895171] [2021-06-05 20:59:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:46,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:46,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895171] [2021-06-05 20:59:46,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:46,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:46,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:46,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318169716] [2021-06-05 20:59:46,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:46,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:46,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:46,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:46,349 INFO L87 Difference]: Start difference. First operand 1811 states and 7241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:46,400 INFO L93 Difference]: Finished difference Result 3935 states and 14924 transitions. [2021-06-05 20:59:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:46,408 INFO L225 Difference]: With dead ends: 3935 [2021-06-05 20:59:46,408 INFO L226 Difference]: Without dead ends: 3529 [2021-06-05 20:59:46,408 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-06-05 20:59:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 1723. [2021-06-05 20:59:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 4.035423925667828) internal successors, (6949), 1722 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6949 transitions. [2021-06-05 20:59:46,453 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6949 transitions. Word has length 25 [2021-06-05 20:59:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:46,453 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6949 transitions. [2021-06-05 20:59:46,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6949 transitions. [2021-06-05 20:59:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:46,455 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:46,455 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:46,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-05 20:59:46,455 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -689078979, now seen corresponding path program 409 times [2021-06-05 20:59:46,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:46,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73979853] [2021-06-05 20:59:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:46,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:46,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73979853] [2021-06-05 20:59:46,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73979853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:46,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:46,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:46,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991297820] [2021-06-05 20:59:46,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:46,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:46,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:46,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:46,539 INFO L87 Difference]: Start difference. First operand 1723 states and 6949 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:46,591 INFO L93 Difference]: Finished difference Result 3763 states and 14202 transitions. [2021-06-05 20:59:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:46,592 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 [2021-06-05 20:59:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:46,599 INFO L225 Difference]: With dead ends: 3763 [2021-06-05 20:59:46,599 INFO L226 Difference]: Without dead ends: 3516 [2021-06-05 20:59:46,599 INFO L810 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 [2021-06-05 20:59:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-06-05 20:59:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1767. [2021-06-05 20:59:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 4.020951302378256) internal successors, (7101), 1766 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 7101 transitions. [2021-06-05 20:59:46,644 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 7101 transitions. Word has length 25 [2021-06-05 20:59:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:46,644 INFO L482 AbstractCegarLoop]: Abstraction has 1767 states and 7101 transitions. [2021-06-05 20:59:46,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 7101 transitions. [2021-06-05 20:59:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:46,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:46,646 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:46,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-05 20:59:46,646 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:46,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1973941151, now seen corresponding path program 410 times [2021-06-05 20:59:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:46,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022579875] [2021-06-05 20:59:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:46,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:46,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022579875] [2021-06-05 20:59:46,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022579875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:46,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:46,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:46,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383151066] [2021-06-05 20:59:46,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:46,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:46,730 INFO L87 Difference]: Start difference. First operand 1767 states and 7101 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:46,777 INFO L93 Difference]: Finished difference Result 3834 states and 14441 transitions. [2021-06-05 20:59:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:46,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:46,784 INFO L225 Difference]: With dead ends: 3834 [2021-06-05 20:59:46,784 INFO L226 Difference]: Without dead ends: 3472 [2021-06-05 20:59:46,784 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-06-05 20:59:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 1723. [2021-06-05 20:59:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 4.026132404181185) internal successors, (6933), 1722 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6933 transitions. [2021-06-05 20:59:46,828 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6933 transitions. Word has length 25 [2021-06-05 20:59:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:46,828 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6933 transitions. [2021-06-05 20:59:46,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6933 transitions. [2021-06-05 20:59:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:46,830 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:46,830 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:46,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-05 20:59:46,830 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash -361946853, now seen corresponding path program 411 times [2021-06-05 20:59:46,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:46,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700650440] [2021-06-05 20:59:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:46,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:46,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700650440] [2021-06-05 20:59:46,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700650440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:46,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:46,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:46,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835363244] [2021-06-05 20:59:46,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:46,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:46,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:46,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:46,922 INFO L87 Difference]: Start difference. First operand 1723 states and 6933 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:46,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:46,978 INFO L93 Difference]: Finished difference Result 3664 states and 13803 transitions. [2021-06-05 20:59:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:46,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:46,986 INFO L225 Difference]: With dead ends: 3664 [2021-06-05 20:59:46,986 INFO L226 Difference]: Without dead ends: 3417 [2021-06-05 20:59:46,986 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2021-06-05 20:59:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 1739. [2021-06-05 20:59:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 4.01668584579977) internal successors, (6981), 1738 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 6981 transitions. [2021-06-05 20:59:47,054 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 6981 transitions. Word has length 25 [2021-06-05 20:59:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:47,054 INFO L482 AbstractCegarLoop]: Abstraction has 1739 states and 6981 transitions. [2021-06-05 20:59:47,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 6981 transitions. [2021-06-05 20:59:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:47,057 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:47,057 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:47,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-05 20:59:47,057 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1909869187, now seen corresponding path program 412 times [2021-06-05 20:59:47,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:47,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324213485] [2021-06-05 20:59:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:47,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:47,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324213485] [2021-06-05 20:59:47,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324213485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:47,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:47,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:47,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497011043] [2021-06-05 20:59:47,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:47,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:47,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:47,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:47,142 INFO L87 Difference]: Start difference. First operand 1739 states and 6981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:47,209 INFO L93 Difference]: Finished difference Result 3664 states and 13787 transitions. [2021-06-05 20:59:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:47,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:47,217 INFO L225 Difference]: With dead ends: 3664 [2021-06-05 20:59:47,217 INFO L226 Difference]: Without dead ends: 3401 [2021-06-05 20:59:47,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-06-05 20:59:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 1723. [2021-06-05 20:59:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 4.021486643437863) internal successors, (6925), 1722 states have internal predecessors, (6925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6925 transitions. [2021-06-05 20:59:47,262 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6925 transitions. Word has length 25 [2021-06-05 20:59:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:47,262 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6925 transitions. [2021-06-05 20:59:47,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6925 transitions. [2021-06-05 20:59:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:47,264 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:47,264 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:47,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-05 20:59:47,265 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1746934623, now seen corresponding path program 413 times [2021-06-05 20:59:47,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:47,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972710557] [2021-06-05 20:59:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:47,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:47,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972710557] [2021-06-05 20:59:47,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972710557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:47,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:47,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:47,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060427587] [2021-06-05 20:59:47,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:47,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:47,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:47,351 INFO L87 Difference]: Start difference. First operand 1723 states and 6925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:47,407 INFO L93 Difference]: Finished difference Result 3763 states and 14178 transitions. [2021-06-05 20:59:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:47,415 INFO L225 Difference]: With dead ends: 3763 [2021-06-05 20:59:47,415 INFO L226 Difference]: Without dead ends: 3516 [2021-06-05 20:59:47,415 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:47,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-06-05 20:59:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1767. [2021-06-05 20:59:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 4.007361268403171) internal successors, (7077), 1766 states have internal predecessors, (7077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 7077 transitions. [2021-06-05 20:59:47,460 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 7077 transitions. Word has length 25 [2021-06-05 20:59:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:47,460 INFO L482 AbstractCegarLoop]: Abstraction has 1767 states and 7077 transitions. [2021-06-05 20:59:47,460 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) [2021-06-05 20:59:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 7077 transitions. [2021-06-05 20:59:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:47,462 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:47,462 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:47,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-05 20:59:47,462 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash 742602685, now seen corresponding path program 414 times [2021-06-05 20:59:47,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:47,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80405773] [2021-06-05 20:59:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:47,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:47,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80405773] [2021-06-05 20:59:47,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80405773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:47,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:47,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:47,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340986496] [2021-06-05 20:59:47,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:47,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:47,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:47,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:47,549 INFO L87 Difference]: Start difference. First operand 1767 states and 7077 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:47,602 INFO L93 Difference]: Finished difference Result 3834 states and 14417 transitions. [2021-06-05 20:59:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:47,609 INFO L225 Difference]: With dead ends: 3834 [2021-06-05 20:59:47,609 INFO L226 Difference]: Without dead ends: 3456 [2021-06-05 20:59:47,610 INFO L810 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 [2021-06-05 20:59:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2021-06-05 20:59:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 1707. [2021-06-05 20:59:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 4.026377491207503) internal successors, (6869), 1706 states have internal predecessors, (6869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6869 transitions. [2021-06-05 20:59:47,653 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6869 transitions. Word has length 25 [2021-06-05 20:59:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:47,653 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6869 transitions. [2021-06-05 20:59:47,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6869 transitions. [2021-06-05 20:59:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:47,656 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:47,656 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:47,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-05 20:59:47,656 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:47,656 INFO L82 PathProgramCache]: Analyzing trace with hash 768968091, now seen corresponding path program 415 times [2021-06-05 20:59:47,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:47,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287214888] [2021-06-05 20:59:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:47,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:47,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287214888] [2021-06-05 20:59:47,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287214888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:47,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:47,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:47,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311594977] [2021-06-05 20:59:47,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:47,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:47,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:47,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:47,739 INFO L87 Difference]: Start difference. First operand 1707 states and 6869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:47,786 INFO L93 Difference]: Finished difference Result 3735 states and 14090 transitions. [2021-06-05 20:59:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:47,786 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 [2021-06-05 20:59:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:47,793 INFO L225 Difference]: With dead ends: 3735 [2021-06-05 20:59:47,794 INFO L226 Difference]: Without dead ends: 3488 [2021-06-05 20:59:47,794 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-06-05 20:59:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 1707. [2021-06-05 20:59:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 4.009964830011723) internal successors, (6841), 1706 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6841 transitions. [2021-06-05 20:59:47,837 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6841 transitions. Word has length 25 [2021-06-05 20:59:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:47,837 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6841 transitions. [2021-06-05 20:59:47,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6841 transitions. [2021-06-05 20:59:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:47,840 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:47,840 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:47,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-06-05 20:59:47,840 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:47,840 INFO L82 PathProgramCache]: Analyzing trace with hash -862979075, now seen corresponding path program 416 times [2021-06-05 20:59:47,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:47,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821592408] [2021-06-05 20:59:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:47,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:47,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821592408] [2021-06-05 20:59:47,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821592408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:47,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:47,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:47,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546451949] [2021-06-05 20:59:47,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:47,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:47,924 INFO L87 Difference]: Start difference. First operand 1707 states and 6841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:47,973 INFO L93 Difference]: Finished difference Result 3806 states and 14329 transitions. [2021-06-05 20:59:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:47,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:47,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:47,980 INFO L225 Difference]: With dead ends: 3806 [2021-06-05 20:59:47,981 INFO L226 Difference]: Without dead ends: 3444 [2021-06-05 20:59:47,981 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-06-05 20:59:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 1663. [2021-06-05 20:59:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.012635379061372) internal successors, (6669), 1662 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6669 transitions. [2021-06-05 20:59:48,023 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6669 transitions. Word has length 25 [2021-06-05 20:59:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:48,023 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6669 transitions. [2021-06-05 20:59:48,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6669 transitions. [2021-06-05 20:59:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:48,025 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:48,025 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:48,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-06-05 20:59:48,026 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash 42490267, now seen corresponding path program 417 times [2021-06-05 20:59:48,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:48,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588921212] [2021-06-05 20:59:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:48,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:48,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588921212] [2021-06-05 20:59:48,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588921212] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:48,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:48,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:48,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455086017] [2021-06-05 20:59:48,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:48,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:48,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:48,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:48,106 INFO L87 Difference]: Start difference. First operand 1663 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:48,154 INFO L93 Difference]: Finished difference Result 3604 states and 13591 transitions. [2021-06-05 20:59:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:48,160 INFO L225 Difference]: With dead ends: 3604 [2021-06-05 20:59:48,161 INFO L226 Difference]: Without dead ends: 3357 [2021-06-05 20:59:48,161 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-06-05 20:59:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 1687. [2021-06-05 20:59:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 4.000593119810202) internal successors, (6745), 1686 states have internal predecessors, (6745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6745 transitions. [2021-06-05 20:59:48,203 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6745 transitions. Word has length 25 [2021-06-05 20:59:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:48,203 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6745 transitions. [2021-06-05 20:59:48,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6745 transitions. [2021-06-05 20:59:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:48,205 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:48,205 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:48,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-06-05 20:59:48,205 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:48,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1484425859, now seen corresponding path program 418 times [2021-06-05 20:59:48,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:48,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172315579] [2021-06-05 20:59:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:48,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:48,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172315579] [2021-06-05 20:59:48,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172315579] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:48,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:48,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:48,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744262990] [2021-06-05 20:59:48,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:48,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:48,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:48,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:48,286 INFO L87 Difference]: Start difference. First operand 1687 states and 6745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:48,347 INFO L93 Difference]: Finished difference Result 3428 states and 13014 transitions. [2021-06-05 20:59:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:48,354 INFO L225 Difference]: With dead ends: 3428 [2021-06-05 20:59:48,354 INFO L226 Difference]: Without dead ends: 3141 [2021-06-05 20:59:48,354 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2021-06-05 20:59:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 1663. [2021-06-05 20:59:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.005415162454874) internal successors, (6657), 1662 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6657 transitions. [2021-06-05 20:59:48,395 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6657 transitions. Word has length 25 [2021-06-05 20:59:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:48,395 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6657 transitions. [2021-06-05 20:59:48,395 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) [2021-06-05 20:59:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6657 transitions. [2021-06-05 20:59:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:48,397 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:48,397 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:48,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-06-05 20:59:48,397 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2122589345, now seen corresponding path program 419 times [2021-06-05 20:59:48,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:48,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786436821] [2021-06-05 20:59:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:48,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:48,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786436821] [2021-06-05 20:59:48,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786436821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:48,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:48,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:48,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957244110] [2021-06-05 20:59:48,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:48,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:48,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:48,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:48,494 INFO L87 Difference]: Start difference. First operand 1663 states and 6657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:48,556 INFO L93 Difference]: Finished difference Result 3775 states and 14242 transitions. [2021-06-05 20:59:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:48,556 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 [2021-06-05 20:59:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:48,563 INFO L225 Difference]: With dead ends: 3775 [2021-06-05 20:59:48,563 INFO L226 Difference]: Without dead ends: 3512 [2021-06-05 20:59:48,563 INFO L810 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 [2021-06-05 20:59:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-06-05 20:59:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 1715. [2021-06-05 20:59:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 3.9912485414235706) internal successors, (6841), 1714 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 6841 transitions. [2021-06-05 20:59:48,607 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 6841 transitions. Word has length 25 [2021-06-05 20:59:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:48,607 INFO L482 AbstractCegarLoop]: Abstraction has 1715 states and 6841 transitions. [2021-06-05 20:59:48,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 6841 transitions. [2021-06-05 20:59:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:48,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:48,609 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:48,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-06-05 20:59:48,609 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:48,609 INFO L82 PathProgramCache]: Analyzing trace with hash 516853565, now seen corresponding path program 420 times [2021-06-05 20:59:48,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:48,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989996723] [2021-06-05 20:59:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:48,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:48,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989996723] [2021-06-05 20:59:48,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989996723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:48,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:48,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:48,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659909829] [2021-06-05 20:59:48,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:48,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:48,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:48,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:48,696 INFO L87 Difference]: Start difference. First operand 1715 states and 6841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:48,743 INFO L93 Difference]: Finished difference Result 3703 states and 13930 transitions. [2021-06-05 20:59:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:48,750 INFO L225 Difference]: With dead ends: 3703 [2021-06-05 20:59:48,750 INFO L226 Difference]: Without dead ends: 3313 [2021-06-05 20:59:48,750 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2021-06-05 20:59:48,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 1643. [2021-06-05 20:59:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 4.01278928136419) internal successors, (6589), 1642 states have internal predecessors, (6589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 6589 transitions. [2021-06-05 20:59:48,791 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 6589 transitions. Word has length 25 [2021-06-05 20:59:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:48,791 INFO L482 AbstractCegarLoop]: Abstraction has 1643 states and 6589 transitions. [2021-06-05 20:59:48,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 6589 transitions. [2021-06-05 20:59:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:48,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:48,793 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:48,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-06-05 20:59:48,793 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:48,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1520528889, now seen corresponding path program 421 times [2021-06-05 20:59:48,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:48,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152762297] [2021-06-05 20:59:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:48,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:48,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152762297] [2021-06-05 20:59:48,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152762297] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:48,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:48,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:48,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407220564] [2021-06-05 20:59:48,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:48,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:48,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:48,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:48,865 INFO L87 Difference]: Start difference. First operand 1643 states and 6589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:48,913 INFO L93 Difference]: Finished difference Result 3469 states and 13052 transitions. [2021-06-05 20:59:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:48,914 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 [2021-06-05 20:59:48,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:48,920 INFO L225 Difference]: With dead ends: 3469 [2021-06-05 20:59:48,920 INFO L226 Difference]: Without dead ends: 3222 [2021-06-05 20:59:48,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-06-05 20:59:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 1667. [2021-06-05 20:59:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.005402160864346) internal successors, (6673), 1666 states have internal predecessors, (6673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6673 transitions. [2021-06-05 20:59:48,969 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6673 transitions. Word has length 25 [2021-06-05 20:59:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:48,969 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6673 transitions. [2021-06-05 20:59:48,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6673 transitions. [2021-06-05 20:59:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:48,972 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:48,972 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:48,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-06-05 20:59:48,972 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash -27393445, now seen corresponding path program 422 times [2021-06-05 20:59:48,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:48,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050141219] [2021-06-05 20:59:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:49,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:49,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050141219] [2021-06-05 20:59:49,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050141219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:49,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:49,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:49,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085468851] [2021-06-05 20:59:49,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:49,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:49,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:49,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:49,045 INFO L87 Difference]: Start difference. First operand 1667 states and 6673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:49,104 INFO L93 Difference]: Finished difference Result 3469 states and 13036 transitions. [2021-06-05 20:59:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:49,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:49,110 INFO L225 Difference]: With dead ends: 3469 [2021-06-05 20:59:49,111 INFO L226 Difference]: Without dead ends: 3206 [2021-06-05 20:59:49,111 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-06-05 20:59:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1651. [2021-06-05 20:59:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.010303030303031) internal successors, (6617), 1650 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6617 transitions. [2021-06-05 20:59:49,151 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6617 transitions. Word has length 25 [2021-06-05 20:59:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:49,151 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6617 transitions. [2021-06-05 20:59:49,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6617 transitions. [2021-06-05 20:59:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:49,153 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:49,153 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:49,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-06-05 20:59:49,153 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:49,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1693375781, now seen corresponding path program 423 times [2021-06-05 20:59:49,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:49,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736175151] [2021-06-05 20:59:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:49,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:49,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736175151] [2021-06-05 20:59:49,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736175151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:49,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:49,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:49,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990313158] [2021-06-05 20:59:49,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:49,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:49,228 INFO L87 Difference]: Start difference. First operand 1651 states and 6617 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:49,279 INFO L93 Difference]: Finished difference Result 3413 states and 12848 transitions. [2021-06-05 20:59:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:49,286 INFO L225 Difference]: With dead ends: 3413 [2021-06-05 20:59:49,286 INFO L226 Difference]: Without dead ends: 3166 [2021-06-05 20:59:49,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2021-06-05 20:59:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 1675. [2021-06-05 20:59:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9982078853046596) internal successors, (6693), 1674 states have internal predecessors, (6693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6693 transitions. [2021-06-05 20:59:49,326 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6693 transitions. Word has length 25 [2021-06-05 20:59:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:49,326 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6693 transitions. [2021-06-05 20:59:49,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6693 transitions. [2021-06-05 20:59:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:49,328 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:49,328 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:49,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-06-05 20:59:49,328 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:49,329 INFO L82 PathProgramCache]: Analyzing trace with hash -643065381, now seen corresponding path program 424 times [2021-06-05 20:59:49,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:49,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805664310] [2021-06-05 20:59:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:49,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:49,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805664310] [2021-06-05 20:59:49,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805664310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:49,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:49,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:49,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29411040] [2021-06-05 20:59:49,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:49,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:49,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:49,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:49,408 INFO L87 Difference]: Start difference. First operand 1675 states and 6693 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:49,473 INFO L93 Difference]: Finished difference Result 3237 states and 12271 transitions. [2021-06-05 20:59:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:49,479 INFO L225 Difference]: With dead ends: 3237 [2021-06-05 20:59:49,479 INFO L226 Difference]: Without dead ends: 2950 [2021-06-05 20:59:49,479 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-06-05 20:59:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1651. [2021-06-05 20:59:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.005454545454546) internal successors, (6609), 1650 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6609 transitions. [2021-06-05 20:59:49,519 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6609 transitions. Word has length 25 [2021-06-05 20:59:49,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:49,519 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6609 transitions. [2021-06-05 20:59:49,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6609 transitions. [2021-06-05 20:59:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:49,521 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:49,521 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:49,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-06-05 20:59:49,521 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:49,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:49,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1485024701, now seen corresponding path program 425 times [2021-06-05 20:59:49,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:49,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924057161] [2021-06-05 20:59:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:49,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:49,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924057161] [2021-06-05 20:59:49,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924057161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:49,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:49,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:49,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768201251] [2021-06-05 20:59:49,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:49,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:49,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:49,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:49,593 INFO L87 Difference]: Start difference. First operand 1651 states and 6609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:49,649 INFO L93 Difference]: Finished difference Result 3221 states and 12215 transitions. [2021-06-05 20:59:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:49,655 INFO L225 Difference]: With dead ends: 3221 [2021-06-05 20:59:49,655 INFO L226 Difference]: Without dead ends: 2974 [2021-06-05 20:59:49,655 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-06-05 20:59:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1675. [2021-06-05 20:59:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9934289127837514) internal successors, (6685), 1674 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6685 transitions. [2021-06-05 20:59:49,694 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6685 transitions. Word has length 25 [2021-06-05 20:59:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:49,694 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6685 transitions. [2021-06-05 20:59:49,694 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) [2021-06-05 20:59:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6685 transitions. [2021-06-05 20:59:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:49,696 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:49,696 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:49,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-06-05 20:59:49,697 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:49,697 INFO L82 PathProgramCache]: Analyzing trace with hash -558312293, now seen corresponding path program 426 times [2021-06-05 20:59:49,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:49,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054059923] [2021-06-05 20:59:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:49,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:49,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054059923] [2021-06-05 20:59:49,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054059923] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:49,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:49,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:49,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106472995] [2021-06-05 20:59:49,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:49,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:49,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:49,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:49,767 INFO L87 Difference]: Start difference. First operand 1675 states and 6685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:49,824 INFO L93 Difference]: Finished difference Result 2973 states and 11362 transitions. [2021-06-05 20:59:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:49,829 INFO L225 Difference]: With dead ends: 2973 [2021-06-05 20:59:49,829 INFO L226 Difference]: Without dead ends: 2678 [2021-06-05 20:59:49,829 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-06-05 20:59:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1643. [2021-06-05 20:59:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 4.010353227771011) internal successors, (6585), 1642 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 6585 transitions. [2021-06-05 20:59:49,866 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 6585 transitions. Word has length 25 [2021-06-05 20:59:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:49,866 INFO L482 AbstractCegarLoop]: Abstraction has 1643 states and 6585 transitions. [2021-06-05 20:59:49,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 6585 transitions. [2021-06-05 20:59:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:49,868 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:49,868 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:49,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-06-05 20:59:49,868 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1904729313, now seen corresponding path program 427 times [2021-06-05 20:59:49,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:49,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435420623] [2021-06-05 20:59:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:49,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:49,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435420623] [2021-06-05 20:59:49,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435420623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:49,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:49,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:49,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138455162] [2021-06-05 20:59:49,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:49,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:49,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:49,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:49,945 INFO L87 Difference]: Start difference. First operand 1643 states and 6585 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:50,004 INFO L93 Difference]: Finished difference Result 3704 states and 13983 transitions. [2021-06-05 20:59:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:50,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:50,012 INFO L225 Difference]: With dead ends: 3704 [2021-06-05 20:59:50,012 INFO L226 Difference]: Without dead ends: 3457 [2021-06-05 20:59:50,012 INFO L810 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 [2021-06-05 20:59:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2021-06-05 20:59:50,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 1687. [2021-06-05 20:59:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 4.005338078291815) internal successors, (6753), 1686 states have internal predecessors, (6753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6753 transitions. [2021-06-05 20:59:50,054 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6753 transitions. Word has length 25 [2021-06-05 20:59:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:50,054 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6753 transitions. [2021-06-05 20:59:50,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6753 transitions. [2021-06-05 20:59:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:50,056 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:50,056 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:50,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-06-05 20:59:50,057 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:50,057 INFO L82 PathProgramCache]: Analyzing trace with hash 346900989, now seen corresponding path program 428 times [2021-06-05 20:59:50,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:50,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168086551] [2021-06-05 20:59:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:50,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:50,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168086551] [2021-06-05 20:59:50,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168086551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:50,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:50,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:50,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263990049] [2021-06-05 20:59:50,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:50,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:50,135 INFO L87 Difference]: Start difference. First operand 1687 states and 6753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:50,195 INFO L93 Difference]: Finished difference Result 3720 states and 14031 transitions. [2021-06-05 20:59:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:50,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:50,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:50,202 INFO L225 Difference]: With dead ends: 3720 [2021-06-05 20:59:50,202 INFO L226 Difference]: Without dead ends: 3433 [2021-06-05 20:59:50,202 INFO L810 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 [2021-06-05 20:59:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-06-05 20:59:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 1663. [2021-06-05 20:59:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.0102286401925396) internal successors, (6665), 1662 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6665 transitions. [2021-06-05 20:59:50,243 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6665 transitions. Word has length 25 [2021-06-05 20:59:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:50,243 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6665 transitions. [2021-06-05 20:59:50,244 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) [2021-06-05 20:59:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6665 transitions. [2021-06-05 20:59:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:50,246 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:50,246 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:50,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-06-05 20:59:50,246 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:50,246 INFO L82 PathProgramCache]: Analyzing trace with hash 569202557, now seen corresponding path program 429 times [2021-06-05 20:59:50,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:50,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654772740] [2021-06-05 20:59:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:50,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:50,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654772740] [2021-06-05 20:59:50,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654772740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:50,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:50,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:50,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152187590] [2021-06-05 20:59:50,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:50,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:50,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:50,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:50,340 INFO L87 Difference]: Start difference. First operand 1663 states and 6665 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:50,405 INFO L93 Difference]: Finished difference Result 3608 states and 13595 transitions. [2021-06-05 20:59:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:50,412 INFO L225 Difference]: With dead ends: 3608 [2021-06-05 20:59:50,412 INFO L226 Difference]: Without dead ends: 3361 [2021-06-05 20:59:50,413 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-06-05 20:59:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 1707. [2021-06-05 20:59:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 3.995896834701055) internal successors, (6817), 1706 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6817 transitions. [2021-06-05 20:59:50,455 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6817 transitions. Word has length 25 [2021-06-05 20:59:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:50,455 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6817 transitions. [2021-06-05 20:59:50,455 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) [2021-06-05 20:59:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6817 transitions. [2021-06-05 20:59:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:50,457 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:50,457 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:50,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-06-05 20:59:50,457 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:50,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:50,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1286770557, now seen corresponding path program 430 times [2021-06-05 20:59:50,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:50,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259925032] [2021-06-05 20:59:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:50,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:50,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259925032] [2021-06-05 20:59:50,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259925032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:50,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:50,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:50,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079190442] [2021-06-05 20:59:50,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:50,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:50,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:50,555 INFO L87 Difference]: Start difference. First operand 1707 states and 6817 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:50,606 INFO L93 Difference]: Finished difference Result 3679 states and 13834 transitions. [2021-06-05 20:59:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:50,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:50,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:50,612 INFO L225 Difference]: With dead ends: 3679 [2021-06-05 20:59:50,613 INFO L226 Difference]: Without dead ends: 3317 [2021-06-05 20:59:50,613 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2021-06-05 20:59:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 1663. [2021-06-05 20:59:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 3.9981949458483754) internal successors, (6645), 1662 states have internal predecessors, (6645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6645 transitions. [2021-06-05 20:59:50,654 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6645 transitions. Word has length 25 [2021-06-05 20:59:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:50,654 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6645 transitions. [2021-06-05 20:59:50,654 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) [2021-06-05 20:59:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6645 transitions. [2021-06-05 20:59:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:50,656 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:50,656 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:50,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-06-05 20:59:50,656 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:50,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:50,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1551550171, now seen corresponding path program 431 times [2021-06-05 20:59:50,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:50,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408634580] [2021-06-05 20:59:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:50,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:50,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408634580] [2021-06-05 20:59:50,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408634580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:50,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:50,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:50,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110545204] [2021-06-05 20:59:50,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:50,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:50,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:50,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:50,743 INFO L87 Difference]: Start difference. First operand 1663 states and 6645 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:50,805 INFO L93 Difference]: Finished difference Result 3596 states and 13539 transitions. [2021-06-05 20:59:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:50,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:50,812 INFO L225 Difference]: With dead ends: 3596 [2021-06-05 20:59:50,812 INFO L226 Difference]: Without dead ends: 3333 [2021-06-05 20:59:50,812 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-06-05 20:59:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 1715. [2021-06-05 20:59:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 3.984247374562427) internal successors, (6829), 1714 states have internal predecessors, (6829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 6829 transitions. [2021-06-05 20:59:50,853 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 6829 transitions. Word has length 25 [2021-06-05 20:59:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:50,854 INFO L482 AbstractCegarLoop]: Abstraction has 1715 states and 6829 transitions. [2021-06-05 20:59:50,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 6829 transitions. [2021-06-05 20:59:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:50,856 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:50,856 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:50,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-06-05 20:59:50,856 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:50,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1769901757, now seen corresponding path program 432 times [2021-06-05 20:59:50,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:50,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112442303] [2021-06-05 20:59:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:50,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:50,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112442303] [2021-06-05 20:59:50,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112442303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:50,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:50,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:50,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656272954] [2021-06-05 20:59:50,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:50,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:50,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:50,954 INFO L87 Difference]: Start difference. First operand 1715 states and 6829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:51,005 INFO L93 Difference]: Finished difference Result 3524 states and 13227 transitions. [2021-06-05 20:59:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:51,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:51,011 INFO L225 Difference]: With dead ends: 3524 [2021-06-05 20:59:51,011 INFO L226 Difference]: Without dead ends: 3126 [2021-06-05 20:59:51,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-06-05 20:59:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1635. [2021-06-05 20:59:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 4.015299877600979) internal successors, (6561), 1634 states have internal predecessors, (6561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6561 transitions. [2021-06-05 20:59:51,051 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6561 transitions. Word has length 25 [2021-06-05 20:59:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:51,051 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6561 transitions. [2021-06-05 20:59:51,051 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) [2021-06-05 20:59:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6561 transitions. [2021-06-05 20:59:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:51,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:51,053 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:51,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-06-05 20:59:51,053 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1634515527, now seen corresponding path program 433 times [2021-06-05 20:59:51,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:51,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093828955] [2021-06-05 20:59:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:51,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:51,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093828955] [2021-06-05 20:59:51,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093828955] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:51,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:51,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:51,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079086732] [2021-06-05 20:59:51,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:51,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:51,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:51,128 INFO L87 Difference]: Start difference. First operand 1635 states and 6561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:51,179 INFO L93 Difference]: Finished difference Result 3478 states and 13125 transitions. [2021-06-05 20:59:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:51,179 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 [2021-06-05 20:59:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:51,186 INFO L225 Difference]: With dead ends: 3478 [2021-06-05 20:59:51,186 INFO L226 Difference]: Without dead ends: 3231 [2021-06-05 20:59:51,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-05 20:59:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1675. [2021-06-05 20:59:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 4.005376344086022) internal successors, (6705), 1674 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6705 transitions. [2021-06-05 20:59:51,228 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6705 transitions. Word has length 25 [2021-06-05 20:59:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:51,228 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6705 transitions. [2021-06-05 20:59:51,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6705 transitions. [2021-06-05 20:59:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:51,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:51,230 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:51,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-06-05 20:59:51,230 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:51,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1091523227, now seen corresponding path program 434 times [2021-06-05 20:59:51,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:51,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710694373] [2021-06-05 20:59:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:51,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:51,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710694373] [2021-06-05 20:59:51,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710694373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:51,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:51,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:51,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008537752] [2021-06-05 20:59:51,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:51,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:51,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:51,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:51,305 INFO L87 Difference]: Start difference. First operand 1675 states and 6705 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:51,371 INFO L93 Difference]: Finished difference Result 3514 states and 13245 transitions. [2021-06-05 20:59:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:51,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:51,378 INFO L225 Difference]: With dead ends: 3514 [2021-06-05 20:59:51,378 INFO L226 Difference]: Without dead ends: 3203 [2021-06-05 20:59:51,378 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2021-06-05 20:59:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 1647. [2021-06-05 20:59:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.015188335358444) internal successors, (6609), 1646 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6609 transitions. [2021-06-05 20:59:51,419 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6609 transitions. Word has length 25 [2021-06-05 20:59:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:51,419 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6609 transitions. [2021-06-05 20:59:51,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6609 transitions. [2021-06-05 20:59:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:51,421 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:51,421 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:51,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-06-05 20:59:51,421 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash -553452901, now seen corresponding path program 435 times [2021-06-05 20:59:51,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:51,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10877004] [2021-06-05 20:59:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:51,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:51,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10877004] [2021-06-05 20:59:51,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10877004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:51,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:51,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:51,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142896629] [2021-06-05 20:59:51,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:51,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:51,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:51,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:51,487 INFO L87 Difference]: Start difference. First operand 1647 states and 6609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:51,541 INFO L93 Difference]: Finished difference Result 3430 states and 12917 transitions. [2021-06-05 20:59:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:51,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:51,548 INFO L225 Difference]: With dead ends: 3430 [2021-06-05 20:59:51,548 INFO L226 Difference]: Without dead ends: 3183 [2021-06-05 20:59:51,548 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2021-06-05 20:59:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1663. [2021-06-05 20:59:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.005415162454874) internal successors, (6657), 1662 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6657 transitions. [2021-06-05 20:59:51,588 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6657 transitions. Word has length 25 [2021-06-05 20:59:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:51,588 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6657 transitions. [2021-06-05 20:59:51,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6657 transitions. [2021-06-05 20:59:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:51,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:51,590 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:51,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-06-05 20:59:51,590 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash 475851291, now seen corresponding path program 436 times [2021-06-05 20:59:51,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:51,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220768777] [2021-06-05 20:59:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:51,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:51,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220768777] [2021-06-05 20:59:51,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220768777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:51,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:51,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:51,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684215986] [2021-06-05 20:59:51,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:51,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:51,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:51,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:51,655 INFO L87 Difference]: Start difference. First operand 1663 states and 6657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:51,720 INFO L93 Difference]: Finished difference Result 3430 states and 12901 transitions. [2021-06-05 20:59:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:51,726 INFO L225 Difference]: With dead ends: 3430 [2021-06-05 20:59:51,727 INFO L226 Difference]: Without dead ends: 3167 [2021-06-05 20:59:51,727 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-06-05 20:59:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 1647. [2021-06-05 20:59:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.0103280680437425) internal successors, (6601), 1646 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6601 transitions. [2021-06-05 20:59:51,769 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6601 transitions. Word has length 25 [2021-06-05 20:59:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:51,769 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6601 transitions. [2021-06-05 20:59:51,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6601 transitions. [2021-06-05 20:59:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:51,772 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:51,772 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:51,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-06-05 20:59:51,772 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:51,772 INFO L82 PathProgramCache]: Analyzing trace with hash -403155331, now seen corresponding path program 437 times [2021-06-05 20:59:51,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:51,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471973510] [2021-06-05 20:59:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:51,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:51,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471973510] [2021-06-05 20:59:51,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471973510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:51,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:51,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:51,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604562252] [2021-06-05 20:59:51,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:51,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:51,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:51,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:51,846 INFO L87 Difference]: Start difference. First operand 1647 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:51,910 INFO L93 Difference]: Finished difference Result 3514 states and 13257 transitions. [2021-06-05 20:59:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:51,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:51,917 INFO L225 Difference]: With dead ends: 3514 [2021-06-05 20:59:51,917 INFO L226 Difference]: Without dead ends: 3231 [2021-06-05 20:59:51,917 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-05 20:59:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1675. [2021-06-05 20:59:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9958183990442055) internal successors, (6689), 1674 states have internal predecessors, (6689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6689 transitions. [2021-06-05 20:59:51,957 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6689 transitions. Word has length 25 [2021-06-05 20:59:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:51,957 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6689 transitions. [2021-06-05 20:59:51,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6689 transitions. [2021-06-05 20:59:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:51,959 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:51,959 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:51,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-06-05 20:59:51,959 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:51,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1848474971, now seen corresponding path program 438 times [2021-06-05 20:59:51,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:51,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839723747] [2021-06-05 20:59:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:52,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:52,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839723747] [2021-06-05 20:59:52,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839723747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:52,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:52,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:52,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387256288] [2021-06-05 20:59:52,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:52,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:52,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:52,037 INFO L87 Difference]: Start difference. First operand 1675 states and 6689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:52,093 INFO L93 Difference]: Finished difference Result 3478 states and 13081 transitions. [2021-06-05 20:59:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:52,099 INFO L225 Difference]: With dead ends: 3478 [2021-06-05 20:59:52,100 INFO L226 Difference]: Without dead ends: 3195 [2021-06-05 20:59:52,100 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2021-06-05 20:59:52,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 1639. [2021-06-05 20:59:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.015262515262515) internal successors, (6577), 1638 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6577 transitions. [2021-06-05 20:59:52,139 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6577 transitions. Word has length 25 [2021-06-05 20:59:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:52,140 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6577 transitions. [2021-06-05 20:59:52,140 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) [2021-06-05 20:59:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6577 transitions. [2021-06-05 20:59:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:52,142 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:52,142 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:52,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-06-05 20:59:52,142 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:52,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2115417573, now seen corresponding path program 439 times [2021-06-05 20:59:52,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:52,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363915357] [2021-06-05 20:59:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:52,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:52,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363915357] [2021-06-05 20:59:52,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363915357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:52,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:52,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:52,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366512044] [2021-06-05 20:59:52,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:52,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:52,215 INFO L87 Difference]: Start difference. First operand 1639 states and 6577 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:52,260 INFO L93 Difference]: Finished difference Result 3466 states and 13081 transitions. [2021-06-05 20:59:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:52,260 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 [2021-06-05 20:59:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:52,266 INFO L225 Difference]: With dead ends: 3466 [2021-06-05 20:59:52,266 INFO L226 Difference]: Without dead ends: 3219 [2021-06-05 20:59:52,266 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-06-05 20:59:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 1679. [2021-06-05 20:59:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 4.005363528009535) internal successors, (6721), 1678 states have internal predecessors, (6721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 6721 transitions. [2021-06-05 20:59:52,307 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 6721 transitions. Word has length 25 [2021-06-05 20:59:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:52,307 INFO L482 AbstractCegarLoop]: Abstraction has 1679 states and 6721 transitions. [2021-06-05 20:59:52,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 6721 transitions. [2021-06-05 20:59:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:52,310 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:52,310 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:52,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-06-05 20:59:52,310 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:52,310 INFO L82 PathProgramCache]: Analyzing trace with hash 610621181, now seen corresponding path program 440 times [2021-06-05 20:59:52,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:52,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410816230] [2021-06-05 20:59:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:52,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:52,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410816230] [2021-06-05 20:59:52,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410816230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:52,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:52,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:52,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605024596] [2021-06-05 20:59:52,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:52,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:52,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:52,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:52,384 INFO L87 Difference]: Start difference. First operand 1679 states and 6721 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:52,441 INFO L93 Difference]: Finished difference Result 3502 states and 13201 transitions. [2021-06-05 20:59:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:52,448 INFO L225 Difference]: With dead ends: 3502 [2021-06-05 20:59:52,448 INFO L226 Difference]: Without dead ends: 3191 [2021-06-05 20:59:52,448 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2021-06-05 20:59:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 1651. [2021-06-05 20:59:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.012727272727273) internal successors, (6621), 1650 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6621 transitions. [2021-06-05 20:59:52,490 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6621 transitions. Word has length 25 [2021-06-05 20:59:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:52,490 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6621 transitions. [2021-06-05 20:59:52,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6621 transitions. [2021-06-05 20:59:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:52,492 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:52,492 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:52,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-06-05 20:59:52,492 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:52,492 INFO L82 PathProgramCache]: Analyzing trace with hash 491303451, now seen corresponding path program 441 times [2021-06-05 20:59:52,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:52,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873005236] [2021-06-05 20:59:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:52,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:52,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873005236] [2021-06-05 20:59:52,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873005236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:52,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:52,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:52,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822762516] [2021-06-05 20:59:52,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:52,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:52,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:52,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:52,559 INFO L87 Difference]: Start difference. First operand 1651 states and 6621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:52,603 INFO L93 Difference]: Finished difference Result 3386 states and 12773 transitions. [2021-06-05 20:59:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:52,604 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 [2021-06-05 20:59:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:52,610 INFO L225 Difference]: With dead ends: 3386 [2021-06-05 20:59:52,610 INFO L226 Difference]: Without dead ends: 3139 [2021-06-05 20:59:52,610 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2021-06-05 20:59:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1675. [2021-06-05 20:59:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 4.000597371565114) internal successors, (6697), 1674 states have internal predecessors, (6697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6697 transitions. [2021-06-05 20:59:52,649 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6697 transitions. Word has length 25 [2021-06-05 20:59:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:52,649 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6697 transitions. [2021-06-05 20:59:52,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6697 transitions. [2021-06-05 20:59:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:52,651 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:52,651 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:52,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-06-05 20:59:52,651 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2102160997, now seen corresponding path program 442 times [2021-06-05 20:59:52,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:52,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376166266] [2021-06-05 20:59:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:52,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:52,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376166266] [2021-06-05 20:59:52,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376166266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:52,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:52,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:52,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941175460] [2021-06-05 20:59:52,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:52,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:52,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:52,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:52,717 INFO L87 Difference]: Start difference. First operand 1675 states and 6697 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:52,775 INFO L93 Difference]: Finished difference Result 3210 states and 12196 transitions. [2021-06-05 20:59:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:52,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:52,781 INFO L225 Difference]: With dead ends: 3210 [2021-06-05 20:59:52,781 INFO L226 Difference]: Without dead ends: 2923 [2021-06-05 20:59:52,781 INFO L810 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 [2021-06-05 20:59:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-06-05 20:59:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1651. [2021-06-05 20:59:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.005454545454546) internal successors, (6609), 1650 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6609 transitions. [2021-06-05 20:59:52,827 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6609 transitions. Word has length 25 [2021-06-05 20:59:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:52,827 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6609 transitions. [2021-06-05 20:59:52,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6609 transitions. [2021-06-05 20:59:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:52,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:52,829 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:52,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-06-05 20:59:52,829 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 641601021, now seen corresponding path program 443 times [2021-06-05 20:59:52,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:52,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548955797] [2021-06-05 20:59:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:52,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:52,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548955797] [2021-06-05 20:59:52,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548955797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:52,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:52,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:52,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086646269] [2021-06-05 20:59:52,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:52,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:52,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:52,893 INFO L87 Difference]: Start difference. First operand 1651 states and 6609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:52,948 INFO L93 Difference]: Finished difference Result 3434 states and 12965 transitions. [2021-06-05 20:59:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:52,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:52,954 INFO L225 Difference]: With dead ends: 3434 [2021-06-05 20:59:52,954 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 20:59:52,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 20:59:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 1687. [2021-06-05 20:59:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 3.991103202846975) internal successors, (6729), 1686 states have internal predecessors, (6729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6729 transitions. [2021-06-05 20:59:52,994 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6729 transitions. Word has length 25 [2021-06-05 20:59:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:52,994 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6729 transitions. [2021-06-05 20:59:52,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6729 transitions. [2021-06-05 20:59:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:52,996 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:52,996 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:52,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-06-05 20:59:52,996 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash -750543525, now seen corresponding path program 444 times [2021-06-05 20:59:52,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:52,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803812642] [2021-06-05 20:59:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:53,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:53,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803812642] [2021-06-05 20:59:53,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803812642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:53,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:53,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:53,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829317406] [2021-06-05 20:59:53,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:53,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:53,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:53,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:53,060 INFO L87 Difference]: Start difference. First operand 1687 states and 6729 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:53,120 INFO L93 Difference]: Finished difference Result 3222 states and 12228 transitions. [2021-06-05 20:59:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:53,126 INFO L225 Difference]: With dead ends: 3222 [2021-06-05 20:59:53,126 INFO L226 Difference]: Without dead ends: 2911 [2021-06-05 20:59:53,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-06-05 20:59:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1639. [2021-06-05 20:59:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.012820512820513) internal successors, (6573), 1638 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6573 transitions. [2021-06-05 20:59:53,165 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6573 transitions. Word has length 25 [2021-06-05 20:59:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:53,165 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6573 transitions. [2021-06-05 20:59:53,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6573 transitions. [2021-06-05 20:59:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:53,167 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:53,167 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:53,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-06-05 20:59:53,167 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:53,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1727412611, now seen corresponding path program 445 times [2021-06-05 20:59:53,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:53,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742372782] [2021-06-05 20:59:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:53,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:53,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742372782] [2021-06-05 20:59:53,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742372782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:53,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:53,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:53,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317741852] [2021-06-05 20:59:53,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:53,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:53,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:53,232 INFO L87 Difference]: Start difference. First operand 1639 states and 6573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:53,275 INFO L93 Difference]: Finished difference Result 3286 states and 12349 transitions. [2021-06-05 20:59:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:53,276 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 [2021-06-05 20:59:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:53,281 INFO L225 Difference]: With dead ends: 3286 [2021-06-05 20:59:53,282 INFO L226 Difference]: Without dead ends: 3039 [2021-06-05 20:59:53,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-06-05 20:59:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1663. [2021-06-05 20:59:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.005415162454874) internal successors, (6657), 1662 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6657 transitions. [2021-06-05 20:59:53,320 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6657 transitions. Word has length 25 [2021-06-05 20:59:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:53,321 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6657 transitions. [2021-06-05 20:59:53,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6657 transitions. [2021-06-05 20:59:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:53,323 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:53,323 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:53,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-06-05 20:59:53,323 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:53,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:53,323 INFO L82 PathProgramCache]: Analyzing trace with hash -698108419, now seen corresponding path program 446 times [2021-06-05 20:59:53,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:53,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119213445] [2021-06-05 20:59:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:53,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:53,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119213445] [2021-06-05 20:59:53,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119213445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:53,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:53,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:53,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725005484] [2021-06-05 20:59:53,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:53,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:53,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:53,391 INFO L87 Difference]: Start difference. First operand 1663 states and 6657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:53,446 INFO L93 Difference]: Finished difference Result 3286 states and 12333 transitions. [2021-06-05 20:59:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:53,452 INFO L225 Difference]: With dead ends: 3286 [2021-06-05 20:59:53,452 INFO L226 Difference]: Without dead ends: 3023 [2021-06-05 20:59:53,452 INFO L810 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 [2021-06-05 20:59:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2021-06-05 20:59:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1647. [2021-06-05 20:59:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.0103280680437425) internal successors, (6601), 1646 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6601 transitions. [2021-06-05 20:59:53,492 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6601 transitions. Word has length 25 [2021-06-05 20:59:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:53,492 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6601 transitions. [2021-06-05 20:59:53,492 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) [2021-06-05 20:59:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6601 transitions. [2021-06-05 20:59:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:53,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:53,494 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:53,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-06-05 20:59:53,494 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1720757723, now seen corresponding path program 447 times [2021-06-05 20:59:53,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:53,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378911482] [2021-06-05 20:59:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:53,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:53,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378911482] [2021-06-05 20:59:53,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378911482] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:53,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:53,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:53,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293267462] [2021-06-05 20:59:53,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:53,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:53,563 INFO L87 Difference]: Start difference. First operand 1647 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:53,609 INFO L93 Difference]: Finished difference Result 3230 states and 12145 transitions. [2021-06-05 20:59:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:53,609 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 [2021-06-05 20:59:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:53,614 INFO L225 Difference]: With dead ends: 3230 [2021-06-05 20:59:53,614 INFO L226 Difference]: Without dead ends: 2983 [2021-06-05 20:59:53,615 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-05 20:59:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1671. [2021-06-05 20:59:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.998203592814371) internal successors, (6677), 1670 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6677 transitions. [2021-06-05 20:59:53,652 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6677 transitions. Word has length 25 [2021-06-05 20:59:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:53,653 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6677 transitions. [2021-06-05 20:59:53,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6677 transitions. [2021-06-05 20:59:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:53,655 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:53,655 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:53,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-06-05 20:59:53,655 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1711904253, now seen corresponding path program 448 times [2021-06-05 20:59:53,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:53,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073494946] [2021-06-05 20:59:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:53,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:53,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073494946] [2021-06-05 20:59:53,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073494946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:53,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:53,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:53,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181004220] [2021-06-05 20:59:53,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:53,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:53,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:53,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:53,721 INFO L87 Difference]: Start difference. First operand 1671 states and 6677 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:53,784 INFO L93 Difference]: Finished difference Result 3054 states and 11568 transitions. [2021-06-05 20:59:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:53,784 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 [2021-06-05 20:59:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:53,789 INFO L225 Difference]: With dead ends: 3054 [2021-06-05 20:59:53,790 INFO L226 Difference]: Without dead ends: 2767 [2021-06-05 20:59:53,790 INFO L810 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 [2021-06-05 20:59:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2021-06-05 20:59:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 1647. [2021-06-05 20:59:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.00546780072904) internal successors, (6593), 1646 states have internal predecessors, (6593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6593 transitions. [2021-06-05 20:59:53,826 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6593 transitions. Word has length 25 [2021-06-05 20:59:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:53,826 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6593 transitions. [2021-06-05 20:59:53,826 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) [2021-06-05 20:59:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6593 transitions. [2021-06-05 20:59:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:53,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:53,829 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:53,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-06-05 20:59:53,829 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:53,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:53,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1936411267, now seen corresponding path program 449 times [2021-06-05 20:59:53,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:53,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667794567] [2021-06-05 20:59:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:53,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:53,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667794567] [2021-06-05 20:59:53,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667794567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:53,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:53,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:53,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497288811] [2021-06-05 20:59:53,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:53,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:53,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:53,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:53,894 INFO L87 Difference]: Start difference. First operand 1647 states and 6593 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:53,950 INFO L93 Difference]: Finished difference Result 3038 states and 11512 transitions. [2021-06-05 20:59:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:53,950 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 [2021-06-05 20:59:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:53,955 INFO L225 Difference]: With dead ends: 3038 [2021-06-05 20:59:53,955 INFO L226 Difference]: Without dead ends: 2791 [2021-06-05 20:59:53,956 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-06-05 20:59:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1671. [2021-06-05 20:59:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.9934131736526948) internal successors, (6669), 1670 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6669 transitions. [2021-06-05 20:59:53,994 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6669 transitions. Word has length 25 [2021-06-05 20:59:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:53,994 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6669 transitions. [2021-06-05 20:59:53,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6669 transitions. [2021-06-05 20:59:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:53,997 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:53,997 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:53,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-06-05 20:59:53,997 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:53,997 INFO L82 PathProgramCache]: Analyzing trace with hash 315219035, now seen corresponding path program 450 times [2021-06-05 20:59:53,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:53,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307932770] [2021-06-05 20:59:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:54,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:54,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307932770] [2021-06-05 20:59:54,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307932770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:54,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:54,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:54,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728647568] [2021-06-05 20:59:54,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:54,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:54,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:54,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:54,063 INFO L87 Difference]: Start difference. First operand 1671 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:54,116 INFO L93 Difference]: Finished difference Result 2790 states and 10659 transitions. [2021-06-05 20:59:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:54,117 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 [2021-06-05 20:59:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:54,121 INFO L225 Difference]: With dead ends: 2790 [2021-06-05 20:59:54,121 INFO L226 Difference]: Without dead ends: 2495 [2021-06-05 20:59:54,122 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-06-05 20:59:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1639. [2021-06-05 20:59:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.01037851037851) internal successors, (6569), 1638 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6569 transitions. [2021-06-05 20:59:54,157 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6569 transitions. Word has length 25 [2021-06-05 20:59:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:54,157 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6569 transitions. [2021-06-05 20:59:54,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6569 transitions. [2021-06-05 20:59:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:54,159 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:54,159 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:54,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-06-05 20:59:54,159 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:54,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1331736927, now seen corresponding path program 451 times [2021-06-05 20:59:54,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:54,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405798661] [2021-06-05 20:59:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:54,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:54,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405798661] [2021-06-05 20:59:54,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405798661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:54,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:54,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:54,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951483871] [2021-06-05 20:59:54,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:54,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:54,223 INFO L87 Difference]: Start difference. First operand 1639 states and 6569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:54,278 INFO L93 Difference]: Finished difference Result 3138 states and 11940 transitions. [2021-06-05 20:59:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:54,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:54,283 INFO L225 Difference]: With dead ends: 3138 [2021-06-05 20:59:54,284 INFO L226 Difference]: Without dead ends: 2855 [2021-06-05 20:59:54,284 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-06-05 20:59:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1679. [2021-06-05 20:59:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 4.000595947556615) internal successors, (6713), 1678 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 6713 transitions. [2021-06-05 20:59:54,321 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 6713 transitions. Word has length 25 [2021-06-05 20:59:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:54,322 INFO L482 AbstractCegarLoop]: Abstraction has 1679 states and 6713 transitions. [2021-06-05 20:59:54,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 6713 transitions. [2021-06-05 20:59:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:54,324 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:54,324 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:54,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-06-05 20:59:54,324 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash -711600067, now seen corresponding path program 452 times [2021-06-05 20:59:54,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:54,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944423237] [2021-06-05 20:59:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:54,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:54,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944423237] [2021-06-05 20:59:54,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944423237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:54,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:54,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:54,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075578128] [2021-06-05 20:59:54,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:54,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:54,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:54,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:54,389 INFO L87 Difference]: Start difference. First operand 1679 states and 6713 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:54,450 INFO L93 Difference]: Finished difference Result 3102 states and 11764 transitions. [2021-06-05 20:59:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:54,456 INFO L225 Difference]: With dead ends: 3102 [2021-06-05 20:59:54,456 INFO L226 Difference]: Without dead ends: 2827 [2021-06-05 20:59:54,456 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-06-05 20:59:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1651. [2021-06-05 20:59:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.007878787878788) internal successors, (6613), 1650 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6613 transitions. [2021-06-05 20:59:54,493 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6613 transitions. Word has length 25 [2021-06-05 20:59:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:54,494 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6613 transitions. [2021-06-05 20:59:54,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6613 transitions. [2021-06-05 20:59:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:54,496 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:54,496 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:54,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-06-05 20:59:54,496 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash 484939965, now seen corresponding path program 453 times [2021-06-05 20:59:54,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:54,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362309691] [2021-06-05 20:59:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:54,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:54,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362309691] [2021-06-05 20:59:54,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362309691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:54,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:54,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:54,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799917972] [2021-06-05 20:59:54,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:54,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:54,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:54,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:54,561 INFO L87 Difference]: Start difference. First operand 1651 states and 6613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:54,616 INFO L93 Difference]: Finished difference Result 3018 states and 11460 transitions. [2021-06-05 20:59:54,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:54,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:54,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:54,622 INFO L225 Difference]: With dead ends: 3018 [2021-06-05 20:59:54,622 INFO L226 Difference]: Without dead ends: 2735 [2021-06-05 20:59:54,622 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-05 20:59:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1687. [2021-06-05 20:59:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 3.993475682087782) internal successors, (6733), 1686 states have internal predecessors, (6733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6733 transitions. [2021-06-05 20:59:54,670 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6733 transitions. Word has length 25 [2021-06-05 20:59:54,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:54,670 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6733 transitions. [2021-06-05 20:59:54,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6733 transitions. [2021-06-05 20:59:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:54,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:54,672 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:54,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-06-05 20:59:54,672 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1677406397, now seen corresponding path program 454 times [2021-06-05 20:59:54,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:54,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049445382] [2021-06-05 20:59:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:54,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:54,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049445382] [2021-06-05 20:59:54,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049445382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:54,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:54,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:54,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79748850] [2021-06-05 20:59:54,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:54,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:54,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:54,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:54,735 INFO L87 Difference]: Start difference. First operand 1687 states and 6733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:54,802 INFO L93 Difference]: Finished difference Result 2806 states and 10723 transitions. [2021-06-05 20:59:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:54,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:54,807 INFO L225 Difference]: With dead ends: 2806 [2021-06-05 20:59:54,807 INFO L226 Difference]: Without dead ends: 2507 [2021-06-05 20:59:54,808 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-06-05 20:59:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1651. [2021-06-05 20:59:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.000606060606061) internal successors, (6601), 1650 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6601 transitions. [2021-06-05 20:59:54,843 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6601 transitions. Word has length 25 [2021-06-05 20:59:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:54,843 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6601 transitions. [2021-06-05 20:59:54,843 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) [2021-06-05 20:59:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6601 transitions. [2021-06-05 20:59:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:54,845 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:54,845 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:54,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-06-05 20:59:54,846 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:54,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1467287579, now seen corresponding path program 455 times [2021-06-05 20:59:54,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:54,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777362963] [2021-06-05 20:59:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:54,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:54,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777362963] [2021-06-05 20:59:54,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777362963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:54,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:54,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:54,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411742465] [2021-06-05 20:59:54,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:54,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:54,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:54,910 INFO L87 Difference]: Start difference. First operand 1651 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:54,962 INFO L93 Difference]: Finished difference Result 2698 states and 10315 transitions. [2021-06-05 20:59:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:54,967 INFO L225 Difference]: With dead ends: 2698 [2021-06-05 20:59:54,967 INFO L226 Difference]: Without dead ends: 2451 [2021-06-05 20:59:54,968 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-06-05 20:59:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1675. [2021-06-05 20:59:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9886499402628437) internal successors, (6677), 1674 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6677 transitions. [2021-06-05 20:59:55,003 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6677 transitions. Word has length 25 [2021-06-05 20:59:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:55,003 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6677 transitions. [2021-06-05 20:59:55,003 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) [2021-06-05 20:59:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6677 transitions. [2021-06-05 20:59:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:55,005 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:55,005 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:55,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-06-05 20:59:55,006 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:55,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1746617091, now seen corresponding path program 456 times [2021-06-05 20:59:55,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:55,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882636691] [2021-06-05 20:59:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:55,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:55,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882636691] [2021-06-05 20:59:55,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882636691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:55,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:55,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:55,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119677923] [2021-06-05 20:59:55,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:55,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:55,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:55,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:55,089 INFO L87 Difference]: Start difference. First operand 1675 states and 6677 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:55,146 INFO L93 Difference]: Finished difference Result 2450 states and 9462 transitions. [2021-06-05 20:59:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:55,150 INFO L225 Difference]: With dead ends: 2450 [2021-06-05 20:59:55,150 INFO L226 Difference]: Without dead ends: 2147 [2021-06-05 20:59:55,151 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2021-06-05 20:59:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1635. [2021-06-05 20:59:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 4.0140758873929006) internal successors, (6559), 1634 states have internal predecessors, (6559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6559 transitions. [2021-06-05 20:59:55,185 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6559 transitions. Word has length 25 [2021-06-05 20:59:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:55,185 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6559 transitions. [2021-06-05 20:59:55,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6559 transitions. [2021-06-05 20:59:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:55,188 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:55,188 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:55,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-06-05 20:59:55,188 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:55,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:55,188 INFO L82 PathProgramCache]: Analyzing trace with hash -636660159, now seen corresponding path program 457 times [2021-06-05 20:59:55,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:55,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352012274] [2021-06-05 20:59:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:55,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:55,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352012274] [2021-06-05 20:59:55,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352012274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:55,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:55,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:55,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261671736] [2021-06-05 20:59:55,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:55,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:55,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:55,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:55,249 INFO L87 Difference]: Start difference. First operand 1635 states and 6559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:55,307 INFO L93 Difference]: Finished difference Result 3865 states and 14728 transitions. [2021-06-05 20:59:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:55,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:55,315 INFO L225 Difference]: With dead ends: 3865 [2021-06-05 20:59:55,315 INFO L226 Difference]: Without dead ends: 3582 [2021-06-05 20:59:55,315 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2021-06-05 20:59:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 1685. [2021-06-05 20:59:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 4.010688836104513) internal successors, (6754), 1684 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 6754 transitions. [2021-06-05 20:59:55,359 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 6754 transitions. Word has length 25 [2021-06-05 20:59:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:55,359 INFO L482 AbstractCegarLoop]: Abstraction has 1685 states and 6754 transitions. [2021-06-05 20:59:55,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 6754 transitions. [2021-06-05 20:59:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:55,361 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:55,361 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:55,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-06-05 20:59:55,361 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1614970143, now seen corresponding path program 458 times [2021-06-05 20:59:55,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:55,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194451586] [2021-06-05 20:59:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:55,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:55,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194451586] [2021-06-05 20:59:55,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194451586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:55,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:55,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:55,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137190425] [2021-06-05 20:59:55,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:55,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:55,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:55,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:55,433 INFO L87 Difference]: Start difference. First operand 1685 states and 6754 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:55,493 INFO L93 Difference]: Finished difference Result 3829 states and 14552 transitions. [2021-06-05 20:59:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:55,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:55,501 INFO L225 Difference]: With dead ends: 3829 [2021-06-05 20:59:55,501 INFO L226 Difference]: Without dead ends: 3554 [2021-06-05 20:59:55,501 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2021-06-05 20:59:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 1657. [2021-06-05 20:59:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 4.018115942028985) internal successors, (6654), 1656 states have internal predecessors, (6654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 6654 transitions. [2021-06-05 20:59:55,544 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 6654 transitions. Word has length 25 [2021-06-05 20:59:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:55,544 INFO L482 AbstractCegarLoop]: Abstraction has 1657 states and 6654 transitions. [2021-06-05 20:59:55,544 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) [2021-06-05 20:59:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 6654 transitions. [2021-06-05 20:59:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:55,546 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:55,546 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:55,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-06-05 20:59:55,546 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1483457121, now seen corresponding path program 459 times [2021-06-05 20:59:55,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:55,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621236722] [2021-06-05 20:59:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:55,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:55,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621236722] [2021-06-05 20:59:55,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621236722] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:55,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:55,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:55,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586975364] [2021-06-05 20:59:55,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:55,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:55,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:55,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:55,612 INFO L87 Difference]: Start difference. First operand 1657 states and 6654 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:55,669 INFO L93 Difference]: Finished difference Result 3889 states and 14828 transitions. [2021-06-05 20:59:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:55,669 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 [2021-06-05 20:59:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:55,676 INFO L225 Difference]: With dead ends: 3889 [2021-06-05 20:59:55,676 INFO L226 Difference]: Without dead ends: 3606 [2021-06-05 20:59:55,676 INFO L810 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 [2021-06-05 20:59:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-06-05 20:59:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 1693. [2021-06-05 20:59:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 4.00354609929078) internal successors, (6774), 1692 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 6774 transitions. [2021-06-05 20:59:55,720 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 6774 transitions. Word has length 25 [2021-06-05 20:59:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:55,720 INFO L482 AbstractCegarLoop]: Abstraction has 1693 states and 6774 transitions. [2021-06-05 20:59:55,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 6774 transitions. [2021-06-05 20:59:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:55,722 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:55,722 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:55,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-06-05 20:59:55,722 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:55,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash -290990689, now seen corresponding path program 460 times [2021-06-05 20:59:55,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:55,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81227447] [2021-06-05 20:59:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:55,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:55,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81227447] [2021-06-05 20:59:55,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81227447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:55,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:55,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:55,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316065791] [2021-06-05 20:59:55,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:55,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:55,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:55,788 INFO L87 Difference]: Start difference. First operand 1693 states and 6774 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:55,851 INFO L93 Difference]: Finished difference Result 3869 states and 14716 transitions. [2021-06-05 20:59:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:55,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:55,859 INFO L225 Difference]: With dead ends: 3869 [2021-06-05 20:59:55,859 INFO L226 Difference]: Without dead ends: 3570 [2021-06-05 20:59:55,859 INFO L810 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 [2021-06-05 20:59:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2021-06-05 20:59:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 1657. [2021-06-05 20:59:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 4.010869565217392) internal successors, (6642), 1656 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 6642 transitions. [2021-06-05 20:59:55,902 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 6642 transitions. Word has length 25 [2021-06-05 20:59:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:55,902 INFO L482 AbstractCegarLoop]: Abstraction has 1657 states and 6642 transitions. [2021-06-05 20:59:55,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 6642 transitions. [2021-06-05 20:59:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:55,904 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:55,904 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:55,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-06-05 20:59:55,904 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -501109507, now seen corresponding path program 461 times [2021-06-05 20:59:55,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:55,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001087222] [2021-06-05 20:59:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:55,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:55,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001087222] [2021-06-05 20:59:55,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001087222] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:55,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:55,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:55,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733659947] [2021-06-05 20:59:55,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:55,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:55,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:55,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:55,969 INFO L87 Difference]: Start difference. First operand 1657 states and 6642 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:56,024 INFO L93 Difference]: Finished difference Result 3805 states and 14464 transitions. [2021-06-05 20:59:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:56,024 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 [2021-06-05 20:59:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:56,031 INFO L225 Difference]: With dead ends: 3805 [2021-06-05 20:59:56,031 INFO L226 Difference]: Without dead ends: 3558 [2021-06-05 20:59:56,032 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2021-06-05 20:59:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 1681. [2021-06-05 20:59:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 3.998809523809524) internal successors, (6718), 1680 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 6718 transitions. [2021-06-05 20:59:56,077 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 6718 transitions. Word has length 25 [2021-06-05 20:59:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:56,077 INFO L482 AbstractCegarLoop]: Abstraction has 1681 states and 6718 transitions. [2021-06-05 20:59:56,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 6718 transitions. [2021-06-05 20:59:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:56,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:56,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:56,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-06-05 20:59:56,079 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:56,080 INFO L82 PathProgramCache]: Analyzing trace with hash 579953119, now seen corresponding path program 462 times [2021-06-05 20:59:56,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:56,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549426369] [2021-06-05 20:59:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:56,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:56,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549426369] [2021-06-05 20:59:56,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549426369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:56,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:56,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:56,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792273789] [2021-06-05 20:59:56,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:56,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:56,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:56,145 INFO L87 Difference]: Start difference. First operand 1681 states and 6718 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:56,264 INFO L93 Difference]: Finished difference Result 3821 states and 14512 transitions. [2021-06-05 20:59:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:56,272 INFO L225 Difference]: With dead ends: 3821 [2021-06-05 20:59:56,272 INFO L226 Difference]: Without dead ends: 3522 [2021-06-05 20:59:56,272 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2021-06-05 20:59:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 1645. [2021-06-05 20:59:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.017031630170316) internal successors, (6604), 1644 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6604 transitions. [2021-06-05 20:59:56,318 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6604 transitions. Word has length 25 [2021-06-05 20:59:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:56,318 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6604 transitions. [2021-06-05 20:59:56,318 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) [2021-06-05 20:59:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6604 transitions. [2021-06-05 20:59:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:56,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:56,320 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:56,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-06-05 20:59:56,320 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1694952223, now seen corresponding path program 463 times [2021-06-05 20:59:56,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:56,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127203378] [2021-06-05 20:59:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:56,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:56,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127203378] [2021-06-05 20:59:56,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127203378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:56,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:56,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:56,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443587965] [2021-06-05 20:59:56,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:56,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:56,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:56,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:56,387 INFO L87 Difference]: Start difference. First operand 1645 states and 6604 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:56,442 INFO L93 Difference]: Finished difference Result 3721 states and 14134 transitions. [2021-06-05 20:59:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:56,443 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 [2021-06-05 20:59:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:56,450 INFO L225 Difference]: With dead ends: 3721 [2021-06-05 20:59:56,450 INFO L226 Difference]: Without dead ends: 3438 [2021-06-05 20:59:56,450 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-06-05 20:59:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 1695. [2021-06-05 20:59:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 4.0100354191263285) internal successors, (6793), 1694 states have internal predecessors, (6793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 6793 transitions. [2021-06-05 20:59:56,492 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 6793 transitions. Word has length 25 [2021-06-05 20:59:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:56,492 INFO L482 AbstractCegarLoop]: Abstraction has 1695 states and 6793 transitions. [2021-06-05 20:59:56,492 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) [2021-06-05 20:59:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 6793 transitions. [2021-06-05 20:59:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:56,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:56,494 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:56,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-06-05 20:59:56,495 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash -348384771, now seen corresponding path program 464 times [2021-06-05 20:59:56,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:56,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719612883] [2021-06-05 20:59:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:56,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:56,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719612883] [2021-06-05 20:59:56,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719612883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:56,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:56,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:56,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914055468] [2021-06-05 20:59:56,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:56,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:56,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:56,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:56,560 INFO L87 Difference]: Start difference. First operand 1695 states and 6793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:56,626 INFO L93 Difference]: Finished difference Result 3685 states and 13958 transitions. [2021-06-05 20:59:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:56,626 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 [2021-06-05 20:59:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:56,633 INFO L225 Difference]: With dead ends: 3685 [2021-06-05 20:59:56,633 INFO L226 Difference]: Without dead ends: 3410 [2021-06-05 20:59:56,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2021-06-05 20:59:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 1667. [2021-06-05 20:59:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.016206482593037) internal successors, (6691), 1666 states have internal predecessors, (6691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6691 transitions. [2021-06-05 20:59:56,673 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6691 transitions. Word has length 25 [2021-06-05 20:59:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:56,673 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6691 transitions. [2021-06-05 20:59:56,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6691 transitions. [2021-06-05 20:59:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:56,675 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:56,675 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:56,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-06-05 20:59:56,675 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:56,676 INFO L82 PathProgramCache]: Analyzing trace with hash -211934433, now seen corresponding path program 465 times [2021-06-05 20:59:56,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:56,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528715906] [2021-06-05 20:59:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:56,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:56,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528715906] [2021-06-05 20:59:56,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528715906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:56,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:56,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:56,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847716965] [2021-06-05 20:59:56,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:56,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:56,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:56,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:56,741 INFO L87 Difference]: Start difference. First operand 1667 states and 6691 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:56,798 INFO L93 Difference]: Finished difference Result 3826 states and 14534 transitions. [2021-06-05 20:59:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:56,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:56,805 INFO L225 Difference]: With dead ends: 3826 [2021-06-05 20:59:56,806 INFO L226 Difference]: Without dead ends: 3543 [2021-06-05 20:59:56,806 INFO L810 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 [2021-06-05 20:59:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-06-05 20:59:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 1729. [2021-06-05 20:59:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.997685185185185) internal successors, (6908), 1728 states have internal predecessors, (6908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 6908 transitions. [2021-06-05 20:59:56,849 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 6908 transitions. Word has length 25 [2021-06-05 20:59:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:56,849 INFO L482 AbstractCegarLoop]: Abstraction has 1729 states and 6908 transitions. [2021-06-05 20:59:56,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 6908 transitions. [2021-06-05 20:59:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:56,851 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:56,852 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:56,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-06-05 20:59:56,852 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:56,852 INFO L82 PathProgramCache]: Analyzing trace with hash -131044577, now seen corresponding path program 466 times [2021-06-05 20:59:56,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:56,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875823400] [2021-06-05 20:59:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:56,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:56,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875823400] [2021-06-05 20:59:56,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875823400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:56,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:56,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:56,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312428995] [2021-06-05 20:59:56,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:56,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:56,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:56,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:56,916 INFO L87 Difference]: Start difference. First operand 1729 states and 6908 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:56,969 INFO L93 Difference]: Finished difference Result 3861 states and 14607 transitions. [2021-06-05 20:59:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:56,976 INFO L225 Difference]: With dead ends: 3861 [2021-06-05 20:59:56,976 INFO L226 Difference]: Without dead ends: 3481 [2021-06-05 20:59:56,976 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-06-05 20:59:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 1667. [2021-06-05 20:59:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.003001200480192) internal successors, (6669), 1666 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6669 transitions. [2021-06-05 20:59:57,018 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6669 transitions. Word has length 25 [2021-06-05 20:59:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:57,018 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6669 transitions. [2021-06-05 20:59:57,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6669 transitions. [2021-06-05 20:59:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:57,021 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:57,021 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:57,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-06-05 20:59:57,021 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:57,021 INFO L82 PathProgramCache]: Analyzing trace with hash 770413181, now seen corresponding path program 467 times [2021-06-05 20:59:57,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:57,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687584056] [2021-06-05 20:59:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:57,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:57,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687584056] [2021-06-05 20:59:57,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687584056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:57,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:57,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:57,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770887006] [2021-06-05 20:59:57,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:57,094 INFO L87 Difference]: Start difference. First operand 1667 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:57,156 INFO L93 Difference]: Finished difference Result 3736 states and 14133 transitions. [2021-06-05 20:59:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:57,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:57,163 INFO L225 Difference]: With dead ends: 3736 [2021-06-05 20:59:57,163 INFO L226 Difference]: Without dead ends: 3489 [2021-06-05 20:59:57,163 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2021-06-05 20:59:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 1711. [2021-06-05 20:59:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 3.988888888888889) internal successors, (6821), 1710 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 6821 transitions. [2021-06-05 20:59:57,205 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 6821 transitions. Word has length 25 [2021-06-05 20:59:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:57,205 INFO L482 AbstractCegarLoop]: Abstraction has 1711 states and 6821 transitions. [2021-06-05 20:59:57,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 6821 transitions. [2021-06-05 20:59:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:57,208 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:57,208 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:57,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-06-05 20:59:57,208 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:57,208 INFO L82 PathProgramCache]: Analyzing trace with hash -299105825, now seen corresponding path program 468 times [2021-06-05 20:59:57,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:57,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437581886] [2021-06-05 20:59:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:57,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:57,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437581886] [2021-06-05 20:59:57,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437581886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:57,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:57,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:57,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067489598] [2021-06-05 20:59:57,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:57,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:57,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:57,284 INFO L87 Difference]: Start difference. First operand 1711 states and 6821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:57,338 INFO L93 Difference]: Finished difference Result 3807 states and 14372 transitions. [2021-06-05 20:59:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:57,345 INFO L225 Difference]: With dead ends: 3807 [2021-06-05 20:59:57,345 INFO L226 Difference]: Without dead ends: 3423 [2021-06-05 20:59:57,345 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2021-06-05 20:59:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 1645. [2021-06-05 20:59:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.010948905109489) internal successors, (6594), 1644 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6594 transitions. [2021-06-05 20:59:57,388 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6594 transitions. Word has length 25 [2021-06-05 20:59:57,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:57,388 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6594 transitions. [2021-06-05 20:59:57,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6594 transitions. [2021-06-05 20:59:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:57,391 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:57,391 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:57,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-06-05 20:59:57,391 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash 838204157, now seen corresponding path program 469 times [2021-06-05 20:59:57,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:57,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323304189] [2021-06-05 20:59:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:57,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:57,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323304189] [2021-06-05 20:59:57,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323304189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:57,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:57,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:57,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282574819] [2021-06-05 20:59:57,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:57,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:57,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:57,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:57,455 INFO L87 Difference]: Start difference. First operand 1645 states and 6594 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:57,518 INFO L93 Difference]: Finished difference Result 3747 states and 14247 transitions. [2021-06-05 20:59:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:57,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:57,525 INFO L225 Difference]: With dead ends: 3747 [2021-06-05 20:59:57,526 INFO L226 Difference]: Without dead ends: 3464 [2021-06-05 20:59:57,526 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2021-06-05 20:59:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 1707. [2021-06-05 20:59:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 4.007620164126612) internal successors, (6837), 1706 states have internal predecessors, (6837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6837 transitions. [2021-06-05 20:59:57,569 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6837 transitions. Word has length 25 [2021-06-05 20:59:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:57,569 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6837 transitions. [2021-06-05 20:59:57,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6837 transitions. [2021-06-05 20:59:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:57,571 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:57,571 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:57,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-06-05 20:59:57,572 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2030670589, now seen corresponding path program 470 times [2021-06-05 20:59:57,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:57,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902241943] [2021-06-05 20:59:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:57,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:57,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902241943] [2021-06-05 20:59:57,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902241943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:57,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:57,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:57,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664597312] [2021-06-05 20:59:57,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:57,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:57,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:57,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:57,643 INFO L87 Difference]: Start difference. First operand 1707 states and 6837 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:57,702 INFO L93 Difference]: Finished difference Result 3727 states and 14135 transitions. [2021-06-05 20:59:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:57,702 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 [2021-06-05 20:59:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:57,709 INFO L225 Difference]: With dead ends: 3727 [2021-06-05 20:59:57,709 INFO L226 Difference]: Without dead ends: 3428 [2021-06-05 20:59:57,709 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2021-06-05 20:59:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 1671. [2021-06-05 20:59:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 4.0113772455089824) internal successors, (6699), 1670 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6699 transitions. [2021-06-05 20:59:57,751 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6699 transitions. Word has length 25 [2021-06-05 20:59:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:57,751 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6699 transitions. [2021-06-05 20:59:57,751 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) [2021-06-05 20:59:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6699 transitions. [2021-06-05 20:59:57,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:57,753 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:57,753 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:57,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-06-05 20:59:57,753 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:57,753 INFO L82 PathProgramCache]: Analyzing trace with hash 220680799, now seen corresponding path program 471 times [2021-06-05 20:59:57,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:57,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177971880] [2021-06-05 20:59:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:57,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:57,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177971880] [2021-06-05 20:59:57,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177971880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:57,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:57,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:57,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673509959] [2021-06-05 20:59:57,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:57,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:57,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:57,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:57,818 INFO L87 Difference]: Start difference. First operand 1671 states and 6699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:57,882 INFO L93 Difference]: Finished difference Result 3766 states and 14268 transitions. [2021-06-05 20:59:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:57,882 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 [2021-06-05 20:59:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:57,889 INFO L225 Difference]: With dead ends: 3766 [2021-06-05 20:59:57,889 INFO L226 Difference]: Without dead ends: 3483 [2021-06-05 20:59:57,889 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2021-06-05 20:59:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 1733. [2021-06-05 20:59:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 3.9930715935334873) internal successors, (6916), 1732 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6916 transitions. [2021-06-05 20:59:57,931 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6916 transitions. Word has length 25 [2021-06-05 20:59:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:57,931 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6916 transitions. [2021-06-05 20:59:57,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6916 transitions. [2021-06-05 20:59:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:57,934 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:57,934 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:57,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-06-05 20:59:57,934 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2140861181, now seen corresponding path program 472 times [2021-06-05 20:59:57,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:57,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053804102] [2021-06-05 20:59:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:57,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:57,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053804102] [2021-06-05 20:59:57,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053804102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:57,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:57,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:57,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491062160] [2021-06-05 20:59:57,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:57,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:57,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:57,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:57,999 INFO L87 Difference]: Start difference. First operand 1733 states and 6916 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:58,046 INFO L93 Difference]: Finished difference Result 3801 states and 14341 transitions. [2021-06-05 20:59:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:58,053 INFO L225 Difference]: With dead ends: 3801 [2021-06-05 20:59:58,053 INFO L226 Difference]: Without dead ends: 3421 [2021-06-05 20:59:58,053 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2021-06-05 20:59:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 1671. [2021-06-05 20:59:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.9958083832335327) internal successors, (6673), 1670 states have internal predecessors, (6673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6673 transitions. [2021-06-05 20:59:58,095 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6673 transitions. Word has length 25 [2021-06-05 20:59:58,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:58,095 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6673 transitions. [2021-06-05 20:59:58,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6673 transitions. [2021-06-05 20:59:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:58,098 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:58,098 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:58,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-06-05 20:59:58,098 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1838556419, now seen corresponding path program 473 times [2021-06-05 20:59:58,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:58,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698663628] [2021-06-05 20:59:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:58,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:58,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698663628] [2021-06-05 20:59:58,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698663628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:58,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:58,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:58,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460533811] [2021-06-05 20:59:58,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:58,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:58,174 INFO L87 Difference]: Start difference. First operand 1671 states and 6673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:58,232 INFO L93 Difference]: Finished difference Result 3716 states and 14047 transitions. [2021-06-05 20:59:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:58,239 INFO L225 Difference]: With dead ends: 3716 [2021-06-05 20:59:58,239 INFO L226 Difference]: Without dead ends: 3453 [2021-06-05 20:59:58,239 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-06-05 20:59:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 1723. [2021-06-05 20:59:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 3.981997677119628) internal successors, (6857), 1722 states have internal predecessors, (6857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6857 transitions. [2021-06-05 20:59:58,282 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6857 transitions. Word has length 25 [2021-06-05 20:59:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:58,282 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6857 transitions. [2021-06-05 20:59:58,282 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) [2021-06-05 20:59:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6857 transitions. [2021-06-05 20:59:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:58,285 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:58,285 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:58,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-06-05 20:59:58,285 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:58,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:58,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1620204833, now seen corresponding path program 474 times [2021-06-05 20:59:58,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:58,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890938809] [2021-06-05 20:59:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:58,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:58,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890938809] [2021-06-05 20:59:58,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890938809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:58,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:58,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:58,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183625352] [2021-06-05 20:59:58,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:58,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:58,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:58,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:58,391 INFO L87 Difference]: Start difference. First operand 1723 states and 6857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:58,454 INFO L93 Difference]: Finished difference Result 3644 states and 13735 transitions. [2021-06-05 20:59:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:58,461 INFO L225 Difference]: With dead ends: 3644 [2021-06-05 20:59:58,461 INFO L226 Difference]: Without dead ends: 3248 [2021-06-05 20:59:58,461 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-06-05 20:59:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 1645. [2021-06-05 20:59:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.004866180048662) internal successors, (6584), 1644 states have internal predecessors, (6584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6584 transitions. [2021-06-05 20:59:58,533 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6584 transitions. Word has length 25 [2021-06-05 20:59:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:58,533 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6584 transitions. [2021-06-05 20:59:58,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6584 transitions. [2021-06-05 20:59:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:58,535 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:58,535 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:58,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-06-05 20:59:58,535 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:58,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1810600667, now seen corresponding path program 475 times [2021-06-05 20:59:58,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:58,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34676824] [2021-06-05 20:59:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:58,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:58,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34676824] [2021-06-05 20:59:58,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34676824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:58,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:58,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:58,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778841800] [2021-06-05 20:59:58,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:58,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:58,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:58,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:58,612 INFO L87 Difference]: Start difference. First operand 1645 states and 6584 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:58,669 INFO L93 Difference]: Finished difference Result 3527 states and 13295 transitions. [2021-06-05 20:59:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:58,669 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 [2021-06-05 20:59:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:58,676 INFO L225 Difference]: With dead ends: 3527 [2021-06-05 20:59:58,676 INFO L226 Difference]: Without dead ends: 3280 [2021-06-05 20:59:58,676 INFO L810 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 [2021-06-05 20:59:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-06-05 20:59:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 1689. [2021-06-05 20:59:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 4.0) internal successors, (6752), 1688 states have internal predecessors, (6752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 6752 transitions. [2021-06-05 20:59:58,717 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 6752 transitions. Word has length 25 [2021-06-05 20:59:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:58,717 INFO L482 AbstractCegarLoop]: Abstraction has 1689 states and 6752 transitions. [2021-06-05 20:59:58,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 6752 transitions. [2021-06-05 20:59:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:58,720 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:58,720 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:58,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-06-05 20:59:58,720 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:58,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1403304003, now seen corresponding path program 476 times [2021-06-05 20:59:58,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:58,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663929643] [2021-06-05 20:59:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:58,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:58,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663929643] [2021-06-05 20:59:58,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663929643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:58,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:58,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:58,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840207298] [2021-06-05 20:59:58,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:58,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:58,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:58,792 INFO L87 Difference]: Start difference. First operand 1689 states and 6752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:58,854 INFO L93 Difference]: Finished difference Result 3543 states and 13343 transitions. [2021-06-05 20:59:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:58,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:58,860 INFO L225 Difference]: With dead ends: 3543 [2021-06-05 20:59:58,861 INFO L226 Difference]: Without dead ends: 3256 [2021-06-05 20:59:58,861 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-06-05 20:59:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 1665. [2021-06-05 20:59:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 4.0048076923076925) internal successors, (6664), 1664 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 6664 transitions. [2021-06-05 20:59:58,902 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 6664 transitions. Word has length 25 [2021-06-05 20:59:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:58,902 INFO L482 AbstractCegarLoop]: Abstraction has 1665 states and 6664 transitions. [2021-06-05 20:59:58,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 6664 transitions. [2021-06-05 20:59:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:58,904 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:58,904 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:58,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-06-05 20:59:58,904 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:58,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1193077309, now seen corresponding path program 477 times [2021-06-05 20:59:58,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:58,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040638530] [2021-06-05 20:59:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:59,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:59,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040638530] [2021-06-05 20:59:59,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040638530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:59,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:59,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:59,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132240771] [2021-06-05 20:59:59,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:59,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:59,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:59,005 INFO L87 Difference]: Start difference. First operand 1665 states and 6664 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:59,062 INFO L93 Difference]: Finished difference Result 3431 states and 12907 transitions. [2021-06-05 20:59:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:59,062 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 [2021-06-05 20:59:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:59,069 INFO L225 Difference]: With dead ends: 3431 [2021-06-05 20:59:59,069 INFO L226 Difference]: Without dead ends: 3184 [2021-06-05 20:59:59,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2021-06-05 20:59:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 1709. [2021-06-05 20:59:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 3.990632318501171) internal successors, (6816), 1708 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 6816 transitions. [2021-06-05 20:59:59,111 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 6816 transitions. Word has length 25 [2021-06-05 20:59:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:59,111 INFO L482 AbstractCegarLoop]: Abstraction has 1709 states and 6816 transitions. [2021-06-05 20:59:59,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 6816 transitions. [2021-06-05 20:59:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:59,113 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:59,113 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:59,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-06-05 20:59:59,113 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1962848829, now seen corresponding path program 478 times [2021-06-05 20:59:59,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:59,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264516465] [2021-06-05 20:59:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:59,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:59,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264516465] [2021-06-05 20:59:59,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264516465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:59,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:59,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:59,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597441987] [2021-06-05 20:59:59,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:59,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:59,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:59,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:59,194 INFO L87 Difference]: Start difference. First operand 1709 states and 6816 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:59,237 INFO L93 Difference]: Finished difference Result 3502 states and 13146 transitions. [2021-06-05 20:59:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:59,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:59,244 INFO L225 Difference]: With dead ends: 3502 [2021-06-05 20:59:59,244 INFO L226 Difference]: Without dead ends: 3140 [2021-06-05 20:59:59,244 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-06-05 20:59:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1665. [2021-06-05 20:59:59,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 3.9927884615384617) internal successors, (6644), 1664 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 6644 transitions. [2021-06-05 20:59:59,284 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 6644 transitions. Word has length 25 [2021-06-05 20:59:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:59,284 INFO L482 AbstractCegarLoop]: Abstraction has 1665 states and 6644 transitions. [2021-06-05 20:59:59,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 6644 transitions. [2021-06-05 20:59:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:59,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:59,287 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:59,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-06-05 20:59:59,287 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:59,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1581082271, now seen corresponding path program 479 times [2021-06-05 20:59:59,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:59,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346942874] [2021-06-05 20:59:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:59,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:59,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346942874] [2021-06-05 20:59:59,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346942874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:59,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:59,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:59,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212925045] [2021-06-05 20:59:59,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:59,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:59,373 INFO L87 Difference]: Start difference. First operand 1665 states and 6644 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:59,433 INFO L93 Difference]: Finished difference Result 3419 states and 12851 transitions. [2021-06-05 20:59:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:59,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:59,440 INFO L225 Difference]: With dead ends: 3419 [2021-06-05 20:59:59,440 INFO L226 Difference]: Without dead ends: 3156 [2021-06-05 20:59:59,440 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:59,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-06-05 20:59:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1717. [2021-06-05 20:59:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 3.979020979020979) internal successors, (6828), 1716 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 6828 transitions. [2021-06-05 20:59:59,481 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 6828 transitions. Word has length 25 [2021-06-05 20:59:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:59,482 INFO L482 AbstractCegarLoop]: Abstraction has 1717 states and 6828 transitions. [2021-06-05 20:59:59,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 6828 transitions. [2021-06-05 20:59:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:59,484 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:59,484 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:59,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-06-05 20:59:59,484 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:59,484 INFO L82 PathProgramCache]: Analyzing trace with hash -239953155, now seen corresponding path program 480 times [2021-06-05 20:59:59,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:59,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20317545] [2021-06-05 20:59:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:59,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:59,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20317545] [2021-06-05 20:59:59,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20317545] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:59,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:59,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:59,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8969988] [2021-06-05 20:59:59,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:59,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:59,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:59,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:59,573 INFO L87 Difference]: Start difference. First operand 1717 states and 6828 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:59,626 INFO L93 Difference]: Finished difference Result 3347 states and 12539 transitions. [2021-06-05 20:59:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:59,626 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 [2021-06-05 20:59:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:59,632 INFO L225 Difference]: With dead ends: 3347 [2021-06-05 20:59:59,632 INFO L226 Difference]: Without dead ends: 2943 [2021-06-05 20:59:59,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:59,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-06-05 20:59:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1631. [2021-06-05 20:59:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.0177914110429445) internal successors, (6549), 1630 states have internal predecessors, (6549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6549 transitions. [2021-06-05 20:59:59,672 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6549 transitions. Word has length 25 [2021-06-05 20:59:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:59,672 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6549 transitions. [2021-06-05 20:59:59,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6549 transitions. [2021-06-05 20:59:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:59,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:59,674 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:59,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-06-05 20:59:59,674 INFO L430 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1302479273, now seen corresponding path program 481 times [2021-06-05 20:59:59,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:59,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123223588] [2021-06-05 20:59:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:59,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:59,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123223588] [2021-06-05 20:59:59,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123223588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:59,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:59,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:59,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376381945] [2021-06-05 20:59:59,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:59,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:59,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:59,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:59,757 INFO L87 Difference]: Start difference. First operand 1631 states and 6549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:59:59,810 INFO L93 Difference]: Finished difference Result 3540 states and 13372 transitions. [2021-06-05 20:59:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:59:59,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 20:59:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:59:59,817 INFO L225 Difference]: With dead ends: 3540 [2021-06-05 20:59:59,817 INFO L226 Difference]: Without dead ends: 3293 [2021-06-05 20:59:59,818 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:59:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-06-05 20:59:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 1673. [2021-06-05 20:59:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 4.008373205741627) internal successors, (6702), 1672 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6702 transitions. [2021-06-05 20:59:59,860 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6702 transitions. Word has length 25 [2021-06-05 20:59:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:59:59,860 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6702 transitions. [2021-06-05 20:59:59,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:59:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6702 transitions. [2021-06-05 20:59:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 20:59:59,862 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:59:59,862 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:59:59,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-06-05 20:59:59,862 INFO L430 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 20:59:59,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:59:59,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1402553273, now seen corresponding path program 482 times [2021-06-05 20:59:59,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:59:59,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257894349] [2021-06-05 20:59:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:59:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:59:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:59:59,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:59:59,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257894349] [2021-06-05 20:59:59,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257894349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:59:59,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:59:59,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:59:59,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4263611] [2021-06-05 20:59:59,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:59:59,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:59:59,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:59:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:59:59,946 INFO L87 Difference]: Start difference. First operand 1673 states and 6702 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:00,013 INFO L93 Difference]: Finished difference Result 3578 states and 13497 transitions. [2021-06-05 21:00:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:00,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:00,020 INFO L225 Difference]: With dead ends: 3578 [2021-06-05 21:00:00,020 INFO L226 Difference]: Without dead ends: 3265 [2021-06-05 21:00:00,020 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-06-05 21:00:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 1645. [2021-06-05 21:00:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.014598540145985) internal successors, (6600), 1644 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6600 transitions. [2021-06-05 21:00:00,061 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6600 transitions. Word has length 25 [2021-06-05 21:00:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:00,061 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6600 transitions. [2021-06-05 21:00:00,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6600 transitions. [2021-06-05 21:00:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:00,064 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:00,064 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:00,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-06-05 21:00:00,064 INFO L430 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:00,064 INFO L82 PathProgramCache]: Analyzing trace with hash -221416647, now seen corresponding path program 483 times [2021-06-05 21:00:00,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:00,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521578195] [2021-06-05 21:00:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:00,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:00,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521578195] [2021-06-05 21:00:00,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521578195] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:00,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:00,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:00,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903098323] [2021-06-05 21:00:00,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:00,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:00,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:00,159 INFO L87 Difference]: Start difference. First operand 1645 states and 6600 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:00,211 INFO L93 Difference]: Finished difference Result 3538 states and 13353 transitions. [2021-06-05 21:00:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:00,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:00,218 INFO L225 Difference]: With dead ends: 3538 [2021-06-05 21:00:00,218 INFO L226 Difference]: Without dead ends: 3291 [2021-06-05 21:00:00,219 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-06-05 21:00:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 1673. [2021-06-05 21:00:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 4.0) internal successors, (6688), 1672 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6688 transitions. [2021-06-05 21:00:00,261 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6688 transitions. Word has length 25 [2021-06-05 21:00:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:00,261 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6688 transitions. [2021-06-05 21:00:00,261 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) [2021-06-05 21:00:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6688 transitions. [2021-06-05 21:00:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:00,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:00,263 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:00,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-06-05 21:00:00,263 INFO L430 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:00,264 INFO L82 PathProgramCache]: Analyzing trace with hash 786881337, now seen corresponding path program 484 times [2021-06-05 21:00:00,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:00,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443763811] [2021-06-05 21:00:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:00,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:00,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443763811] [2021-06-05 21:00:00,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443763811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:00,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:00,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:00,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906935879] [2021-06-05 21:00:00,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:00,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:00,351 INFO L87 Difference]: Start difference. First operand 1673 states and 6688 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:00,418 INFO L93 Difference]: Finished difference Result 3574 states and 13473 transitions. [2021-06-05 21:00:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:00,425 INFO L225 Difference]: With dead ends: 3574 [2021-06-05 21:00:00,425 INFO L226 Difference]: Without dead ends: 3263 [2021-06-05 21:00:00,425 INFO L810 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 [2021-06-05 21:00:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-06-05 21:00:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 1645. [2021-06-05 21:00:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.0060827250608275) internal successors, (6586), 1644 states have internal predecessors, (6586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6586 transitions. [2021-06-05 21:00:00,466 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6586 transitions. Word has length 25 [2021-06-05 21:00:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:00,467 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6586 transitions. [2021-06-05 21:00:00,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6586 transitions. [2021-06-05 21:00:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:00,469 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:00,469 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:00,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-06-05 21:00:00,469 INFO L430 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:00,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1195745307, now seen corresponding path program 485 times [2021-06-05 21:00:00,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:00,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384866250] [2021-06-05 21:00:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:00,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:00,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384866250] [2021-06-05 21:00:00,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384866250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:00,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:00,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:00,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192394982] [2021-06-05 21:00:00,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:00,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:00,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:00,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:00,548 INFO L87 Difference]: Start difference. First operand 1645 states and 6586 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:00,637 INFO L93 Difference]: Finished difference Result 3632 states and 13728 transitions. [2021-06-05 21:00:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:00,637 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 [2021-06-05 21:00:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:00,646 INFO L225 Difference]: With dead ends: 3632 [2021-06-05 21:00:00,646 INFO L226 Difference]: Without dead ends: 3347 [2021-06-05 21:00:00,646 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-06-05 21:00:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 1691. [2021-06-05 21:00:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.9875739644970416) internal successors, (6739), 1690 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 6739 transitions. [2021-06-05 21:00:00,689 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 6739 transitions. Word has length 25 [2021-06-05 21:00:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:00,689 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 6739 transitions. [2021-06-05 21:00:00,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 6739 transitions. [2021-06-05 21:00:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:00,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:00,692 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:00,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-06-05 21:00:00,693 INFO L430 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash -847591687, now seen corresponding path program 486 times [2021-06-05 21:00:00,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:00,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745297172] [2021-06-05 21:00:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:00,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:00,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745297172] [2021-06-05 21:00:00,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745297172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:00,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:00,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:00,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548092264] [2021-06-05 21:00:00,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:00,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:00,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:00,764 INFO L87 Difference]: Start difference. First operand 1691 states and 6739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:00,831 INFO L93 Difference]: Finished difference Result 3630 states and 13677 transitions. [2021-06-05 21:00:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:00,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:00,838 INFO L225 Difference]: With dead ends: 3630 [2021-06-05 21:00:00,838 INFO L226 Difference]: Without dead ends: 3287 [2021-06-05 21:00:00,838 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-06-05 21:00:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 1631. [2021-06-05 21:00:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.015337423312883) internal successors, (6545), 1630 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6545 transitions. [2021-06-05 21:00:00,879 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6545 transitions. Word has length 25 [2021-06-05 21:00:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:00,879 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6545 transitions. [2021-06-05 21:00:00,879 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) [2021-06-05 21:00:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6545 transitions. [2021-06-05 21:00:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:00,882 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:00,882 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:00,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-06-05 21:00:00,882 INFO L430 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1783381319, now seen corresponding path program 487 times [2021-06-05 21:00:00,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:00,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804118269] [2021-06-05 21:00:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:00,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:00,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804118269] [2021-06-05 21:00:00,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804118269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:00,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:00,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:00,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994423086] [2021-06-05 21:00:00,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:00,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:00,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:00,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:00,954 INFO L87 Difference]: Start difference. First operand 1631 states and 6545 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:01,000 INFO L93 Difference]: Finished difference Result 3468 states and 13056 transitions. [2021-06-05 21:00:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:01,000 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 [2021-06-05 21:00:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:01,007 INFO L225 Difference]: With dead ends: 3468 [2021-06-05 21:00:01,007 INFO L226 Difference]: Without dead ends: 3221 [2021-06-05 21:00:01,007 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:01,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-06-05 21:00:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 1667. [2021-06-05 21:00:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.003001200480192) internal successors, (6669), 1666 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6669 transitions. [2021-06-05 21:00:01,047 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6669 transitions. Word has length 25 [2021-06-05 21:00:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:01,047 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6669 transitions. [2021-06-05 21:00:01,047 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) [2021-06-05 21:00:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6669 transitions. [2021-06-05 21:00:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:01,050 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:01,050 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:01,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-06-05 21:00:01,050 INFO L430 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash 921651227, now seen corresponding path program 488 times [2021-06-05 21:00:01,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:01,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939465734] [2021-06-05 21:00:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:01,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:01,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939465734] [2021-06-05 21:00:01,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939465734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:01,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:01,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:01,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409909576] [2021-06-05 21:00:01,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:01,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:01,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:01,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:01,119 INFO L87 Difference]: Start difference. First operand 1667 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:01,177 INFO L93 Difference]: Finished difference Result 3506 states and 13181 transitions. [2021-06-05 21:00:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:01,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:01,184 INFO L225 Difference]: With dead ends: 3506 [2021-06-05 21:00:01,184 INFO L226 Difference]: Without dead ends: 3193 [2021-06-05 21:00:01,184 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-06-05 21:00:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 1639. [2021-06-05 21:00:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.012820512820513) internal successors, (6573), 1638 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6573 transitions. [2021-06-05 21:00:01,224 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6573 transitions. Word has length 25 [2021-06-05 21:00:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:01,224 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6573 transitions. [2021-06-05 21:00:01,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6573 transitions. [2021-06-05 21:00:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:01,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:01,226 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:01,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-06-05 21:00:01,226 INFO L430 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash 823339705, now seen corresponding path program 489 times [2021-06-05 21:00:01,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:01,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063426095] [2021-06-05 21:00:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:01,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:01,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063426095] [2021-06-05 21:00:01,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063426095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:01,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:01,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:01,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647698347] [2021-06-05 21:00:01,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:01,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:01,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:01,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:01,292 INFO L87 Difference]: Start difference. First operand 1639 states and 6573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:01,339 INFO L93 Difference]: Finished difference Result 3418 states and 12843 transitions. [2021-06-05 21:00:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:01,340 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 [2021-06-05 21:00:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:01,346 INFO L225 Difference]: With dead ends: 3418 [2021-06-05 21:00:01,346 INFO L226 Difference]: Without dead ends: 3171 [2021-06-05 21:00:01,346 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:01,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2021-06-05 21:00:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 1655. [2021-06-05 21:00:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 4.003022974607013) internal successors, (6621), 1654 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6621 transitions. [2021-06-05 21:00:01,386 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6621 transitions. Word has length 25 [2021-06-05 21:00:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:01,386 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6621 transitions. [2021-06-05 21:00:01,386 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) [2021-06-05 21:00:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6621 transitions. [2021-06-05 21:00:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:01,388 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:01,388 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:01,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-06-05 21:00:01,388 INFO L430 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:01,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:01,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1791130951, now seen corresponding path program 490 times [2021-06-05 21:00:01,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:01,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492243101] [2021-06-05 21:00:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:01,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:01,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492243101] [2021-06-05 21:00:01,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492243101] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:01,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:01,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:01,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218949840] [2021-06-05 21:00:01,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:01,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:01,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:01,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:01,453 INFO L87 Difference]: Start difference. First operand 1655 states and 6621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:01,512 INFO L93 Difference]: Finished difference Result 3418 states and 12827 transitions. [2021-06-05 21:00:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:01,512 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 [2021-06-05 21:00:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:01,518 INFO L225 Difference]: With dead ends: 3418 [2021-06-05 21:00:01,518 INFO L226 Difference]: Without dead ends: 3155 [2021-06-05 21:00:01,518 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2021-06-05 21:00:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 1639. [2021-06-05 21:00:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.007936507936508) internal successors, (6565), 1638 states have internal predecessors, (6565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6565 transitions. [2021-06-05 21:00:01,558 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6565 transitions. Word has length 25 [2021-06-05 21:00:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:01,558 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6565 transitions. [2021-06-05 21:00:01,558 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) [2021-06-05 21:00:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6565 transitions. [2021-06-05 21:00:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:01,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:01,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:01,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-06-05 21:00:01,560 INFO L430 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:01,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2054465637, now seen corresponding path program 491 times [2021-06-05 21:00:01,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:01,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46747440] [2021-06-05 21:00:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:01,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:01,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46747440] [2021-06-05 21:00:01,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46747440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:01,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:01,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:01,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183512119] [2021-06-05 21:00:01,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:01,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:01,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:01,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:01,632 INFO L87 Difference]: Start difference. First operand 1639 states and 6565 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:01,702 INFO L93 Difference]: Finished difference Result 3506 states and 13193 transitions. [2021-06-05 21:00:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:01,702 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 [2021-06-05 21:00:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:01,709 INFO L225 Difference]: With dead ends: 3506 [2021-06-05 21:00:01,709 INFO L226 Difference]: Without dead ends: 3221 [2021-06-05 21:00:01,709 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-06-05 21:00:01,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 1667. [2021-06-05 21:00:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9933973589435774) internal successors, (6653), 1666 states have internal predecessors, (6653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6653 transitions. [2021-06-05 21:00:01,753 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6653 transitions. Word has length 25 [2021-06-05 21:00:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:01,753 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6653 transitions. [2021-06-05 21:00:01,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6653 transitions. [2021-06-05 21:00:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:01,755 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:01,755 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:01,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-06-05 21:00:01,755 INFO L430 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:01,755 INFO L82 PathProgramCache]: Analyzing trace with hash 848357113, now seen corresponding path program 492 times [2021-06-05 21:00:01,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:01,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031900351] [2021-06-05 21:00:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:01,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:01,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031900351] [2021-06-05 21:00:01,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031900351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:01,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:01,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:01,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838074898] [2021-06-05 21:00:01,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:01,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:01,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:01,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:01,822 INFO L87 Difference]: Start difference. First operand 1667 states and 6653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:01,884 INFO L93 Difference]: Finished difference Result 3468 states and 13012 transitions. [2021-06-05 21:00:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:01,890 INFO L225 Difference]: With dead ends: 3468 [2021-06-05 21:00:01,890 INFO L226 Difference]: Without dead ends: 3185 [2021-06-05 21:00:01,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2021-06-05 21:00:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 1631. [2021-06-05 21:00:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.012883435582822) internal successors, (6541), 1630 states have internal predecessors, (6541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6541 transitions. [2021-06-05 21:00:01,930 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6541 transitions. Word has length 25 [2021-06-05 21:00:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:01,930 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6541 transitions. [2021-06-05 21:00:01,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6541 transitions. [2021-06-05 21:00:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:01,933 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:01,933 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:01,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-06-05 21:00:01,933 INFO L430 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:01,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1395376357, now seen corresponding path program 493 times [2021-06-05 21:00:01,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:01,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888884001] [2021-06-05 21:00:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:02,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:02,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888884001] [2021-06-05 21:00:02,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888884001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:02,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:02,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:02,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539886155] [2021-06-05 21:00:02,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:02,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:02,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:02,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:02,018 INFO L87 Difference]: Start difference. First operand 1631 states and 6541 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:02,068 INFO L93 Difference]: Finished difference Result 3464 states and 13042 transitions. [2021-06-05 21:00:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:02,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:02,074 INFO L225 Difference]: With dead ends: 3464 [2021-06-05 21:00:02,074 INFO L226 Difference]: Without dead ends: 3217 [2021-06-05 21:00:02,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-05 21:00:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1667. [2021-06-05 21:00:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.0006002400960385) internal successors, (6665), 1666 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6665 transitions. [2021-06-05 21:00:02,117 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6665 transitions. Word has length 25 [2021-06-05 21:00:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:02,117 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6665 transitions. [2021-06-05 21:00:02,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6665 transitions. [2021-06-05 21:00:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:02,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:02,119 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:02,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-06-05 21:00:02,119 INFO L430 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash -387078373, now seen corresponding path program 494 times [2021-06-05 21:00:02,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:02,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48094096] [2021-06-05 21:00:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:02,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:02,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48094096] [2021-06-05 21:00:02,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48094096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:02,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:02,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:02,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449342166] [2021-06-05 21:00:02,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:02,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:02,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:02,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:02,205 INFO L87 Difference]: Start difference. First operand 1667 states and 6665 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:02,273 INFO L93 Difference]: Finished difference Result 3500 states and 13162 transitions. [2021-06-05 21:00:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:02,273 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 [2021-06-05 21:00:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:02,279 INFO L225 Difference]: With dead ends: 3500 [2021-06-05 21:00:02,279 INFO L226 Difference]: Without dead ends: 3189 [2021-06-05 21:00:02,279 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-06-05 21:00:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1639. [2021-06-05 21:00:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.01037851037851) internal successors, (6569), 1638 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6569 transitions. [2021-06-05 21:00:02,322 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6569 transitions. Word has length 25 [2021-06-05 21:00:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:02,322 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6569 transitions. [2021-06-05 21:00:02,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6569 transitions. [2021-06-05 21:00:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:02,324 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:02,324 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:02,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-06-05 21:00:02,324 INFO L430 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2052793977, now seen corresponding path program 495 times [2021-06-05 21:00:02,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:02,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8103909] [2021-06-05 21:00:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:02,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:02,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8103909] [2021-06-05 21:00:02,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8103909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:02,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:02,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:02,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662775515] [2021-06-05 21:00:02,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:02,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:02,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:02,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:02,407 INFO L87 Difference]: Start difference. First operand 1639 states and 6569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:02,458 INFO L93 Difference]: Finished difference Result 3416 states and 12834 transitions. [2021-06-05 21:00:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:02,459 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 [2021-06-05 21:00:02,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:02,465 INFO L225 Difference]: With dead ends: 3416 [2021-06-05 21:00:02,465 INFO L226 Difference]: Without dead ends: 3169 [2021-06-05 21:00:02,465 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2021-06-05 21:00:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 1655. [2021-06-05 21:00:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 4.000604594921403) internal successors, (6617), 1654 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6617 transitions. [2021-06-05 21:00:02,508 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6617 transitions. Word has length 25 [2021-06-05 21:00:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:02,508 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6617 transitions. [2021-06-05 21:00:02,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6617 transitions. [2021-06-05 21:00:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:02,510 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:02,510 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:02,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-06-05 21:00:02,510 INFO L430 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2022934299, now seen corresponding path program 496 times [2021-06-05 21:00:02,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:02,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494011889] [2021-06-05 21:00:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:02,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:02,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494011889] [2021-06-05 21:00:02,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494011889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:02,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:02,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:02,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146497921] [2021-06-05 21:00:02,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:02,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:02,594 INFO L87 Difference]: Start difference. First operand 1655 states and 6617 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:02,658 INFO L93 Difference]: Finished difference Result 3416 states and 12818 transitions. [2021-06-05 21:00:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:02,665 INFO L225 Difference]: With dead ends: 3416 [2021-06-05 21:00:02,665 INFO L226 Difference]: Without dead ends: 3153 [2021-06-05 21:00:02,665 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2021-06-05 21:00:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 1639. [2021-06-05 21:00:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.0054945054945055) internal successors, (6561), 1638 states have internal predecessors, (6561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6561 transitions. [2021-06-05 21:00:02,707 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6561 transitions. Word has length 25 [2021-06-05 21:00:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:02,707 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6561 transitions. [2021-06-05 21:00:02,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6561 transitions. [2021-06-05 21:00:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:02,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:02,709 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:02,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-06-05 21:00:02,709 INFO L430 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash -337510629, now seen corresponding path program 497 times [2021-06-05 21:00:02,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:02,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966263684] [2021-06-05 21:00:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:02,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:02,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966263684] [2021-06-05 21:00:02,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966263684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:02,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:02,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:02,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946380639] [2021-06-05 21:00:02,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:02,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:02,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:02,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:02,775 INFO L87 Difference]: Start difference. First operand 1639 states and 6561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:02,840 INFO L93 Difference]: Finished difference Result 3500 states and 13174 transitions. [2021-06-05 21:00:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:02,847 INFO L225 Difference]: With dead ends: 3500 [2021-06-05 21:00:02,847 INFO L226 Difference]: Without dead ends: 3217 [2021-06-05 21:00:02,847 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-05 21:00:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1667. [2021-06-05 21:00:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9909963985594237) internal successors, (6649), 1666 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6649 transitions. [2021-06-05 21:00:02,889 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6649 transitions. Word has length 25 [2021-06-05 21:00:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:02,889 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6649 transitions. [2021-06-05 21:00:02,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6649 transitions. [2021-06-05 21:00:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:02,891 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:02,891 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:02,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-06-05 21:00:02,892 INFO L430 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:02,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1914119673, now seen corresponding path program 498 times [2021-06-05 21:00:02,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:02,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902243321] [2021-06-05 21:00:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:02,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:02,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902243321] [2021-06-05 21:00:02,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902243321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:02,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:02,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:02,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383391699] [2021-06-05 21:00:02,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:02,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:02,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:02,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:02,962 INFO L87 Difference]: Start difference. First operand 1667 states and 6649 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:03,031 INFO L93 Difference]: Finished difference Result 3464 states and 12998 transitions. [2021-06-05 21:00:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:03,031 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 [2021-06-05 21:00:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:03,038 INFO L225 Difference]: With dead ends: 3464 [2021-06-05 21:00:03,038 INFO L226 Difference]: Without dead ends: 3181 [2021-06-05 21:00:03,038 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-06-05 21:00:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 1631. [2021-06-05 21:00:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.0104294478527605) internal successors, (6537), 1630 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6537 transitions. [2021-06-05 21:00:03,078 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6537 transitions. Word has length 25 [2021-06-05 21:00:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:03,078 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6537 transitions. [2021-06-05 21:00:03,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6537 transitions. [2021-06-05 21:00:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:03,081 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:03,081 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:03,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-06-05 21:00:03,081 INFO L430 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:03,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:03,081 INFO L82 PathProgramCache]: Analyzing trace with hash -671272067, now seen corresponding path program 499 times [2021-06-05 21:00:03,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:03,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473010152] [2021-06-05 21:00:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:03,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:03,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473010152] [2021-06-05 21:00:03,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473010152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:03,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:03,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:03,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245366184] [2021-06-05 21:00:03,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:03,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:03,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:03,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:03,146 INFO L87 Difference]: Start difference. First operand 1631 states and 6537 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:03,212 INFO L93 Difference]: Finished difference Result 3632 states and 13744 transitions. [2021-06-05 21:00:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:03,219 INFO L225 Difference]: With dead ends: 3632 [2021-06-05 21:00:03,219 INFO L226 Difference]: Without dead ends: 3347 [2021-06-05 21:00:03,219 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-06-05 21:00:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 1691. [2021-06-05 21:00:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.997041420118343) internal successors, (6755), 1690 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 6755 transitions. [2021-06-05 21:00:03,261 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 6755 transitions. Word has length 25 [2021-06-05 21:00:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:03,261 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 6755 transitions. [2021-06-05 21:00:03,261 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) [2021-06-05 21:00:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 6755 transitions. [2021-06-05 21:00:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:03,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:03,263 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:03,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-06-05 21:00:03,263 INFO L430 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1580358235, now seen corresponding path program 500 times [2021-06-05 21:00:03,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:03,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825470075] [2021-06-05 21:00:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:03,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:03,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825470075] [2021-06-05 21:00:03,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825470075] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:03,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:03,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:03,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596237496] [2021-06-05 21:00:03,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:03,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:03,328 INFO L87 Difference]: Start difference. First operand 1691 states and 6755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:03,385 INFO L93 Difference]: Finished difference Result 3630 states and 13693 transitions. [2021-06-05 21:00:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:03,392 INFO L225 Difference]: With dead ends: 3630 [2021-06-05 21:00:03,392 INFO L226 Difference]: Without dead ends: 3301 [2021-06-05 21:00:03,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-06-05 21:00:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 1645. [2021-06-05 21:00:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.007299270072993) internal successors, (6588), 1644 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6588 transitions. [2021-06-05 21:00:03,434 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6588 transitions. Word has length 25 [2021-06-05 21:00:03,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:03,435 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6588 transitions. [2021-06-05 21:00:03,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6588 transitions. [2021-06-05 21:00:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:03,437 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:03,437 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:03,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-06-05 21:00:03,437 INFO L430 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1518069029, now seen corresponding path program 501 times [2021-06-05 21:00:03,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:03,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957306635] [2021-06-05 21:00:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:03,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:03,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957306635] [2021-06-05 21:00:03,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957306635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:03,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:03,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:03,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758089102] [2021-06-05 21:00:03,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:03,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:03,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:03,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:03,503 INFO L87 Difference]: Start difference. First operand 1645 states and 6588 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:03,563 INFO L93 Difference]: Finished difference Result 3578 states and 13499 transitions. [2021-06-05 21:00:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:03,570 INFO L225 Difference]: With dead ends: 3578 [2021-06-05 21:00:03,570 INFO L226 Difference]: Without dead ends: 3293 [2021-06-05 21:00:03,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-06-05 21:00:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 1673. [2021-06-05 21:00:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 3.992822966507177) internal successors, (6676), 1672 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6676 transitions. [2021-06-05 21:00:03,612 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6676 transitions. Word has length 25 [2021-06-05 21:00:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:03,612 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6676 transitions. [2021-06-05 21:00:03,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6676 transitions. [2021-06-05 21:00:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:03,615 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:03,615 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:03,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-06-05 21:00:03,615 INFO L430 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:03,615 INFO L82 PathProgramCache]: Analyzing trace with hash -325602597, now seen corresponding path program 502 times [2021-06-05 21:00:03,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:03,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130577727] [2021-06-05 21:00:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:03,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:03,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130577727] [2021-06-05 21:00:03,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130577727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:03,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:03,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:03,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735346206] [2021-06-05 21:00:03,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:03,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:03,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:03,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:03,700 INFO L87 Difference]: Start difference. First operand 1673 states and 6676 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:03,758 INFO L93 Difference]: Finished difference Result 3540 states and 13318 transitions. [2021-06-05 21:00:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:03,765 INFO L225 Difference]: With dead ends: 3540 [2021-06-05 21:00:03,765 INFO L226 Difference]: Without dead ends: 3265 [2021-06-05 21:00:03,765 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:03,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-06-05 21:00:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 1645. [2021-06-05 21:00:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.9987834549878345) internal successors, (6574), 1644 states have internal predecessors, (6574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6574 transitions. [2021-06-05 21:00:03,807 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6574 transitions. Word has length 25 [2021-06-05 21:00:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:03,807 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6574 transitions. [2021-06-05 21:00:03,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6574 transitions. [2021-06-05 21:00:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:03,809 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:03,809 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:03,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-06-05 21:00:03,809 INFO L430 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -535721415, now seen corresponding path program 503 times [2021-06-05 21:00:03,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:03,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870968632] [2021-06-05 21:00:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:03,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:03,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870968632] [2021-06-05 21:00:03,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870968632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:03,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:03,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:03,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557621442] [2021-06-05 21:00:03,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:03,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:03,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:03,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:03,881 INFO L87 Difference]: Start difference. First operand 1645 states and 6574 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:03,940 INFO L93 Difference]: Finished difference Result 3574 states and 13475 transitions. [2021-06-05 21:00:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:03,940 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 [2021-06-05 21:00:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:03,947 INFO L225 Difference]: With dead ends: 3574 [2021-06-05 21:00:03,947 INFO L226 Difference]: Without dead ends: 3291 [2021-06-05 21:00:03,947 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-06-05 21:00:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 1673. [2021-06-05 21:00:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 3.9844497607655502) internal successors, (6662), 1672 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6662 transitions. [2021-06-05 21:00:03,993 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6662 transitions. Word has length 25 [2021-06-05 21:00:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:03,993 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6662 transitions. [2021-06-05 21:00:03,993 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) [2021-06-05 21:00:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6662 transitions. [2021-06-05 21:00:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:03,996 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:03,996 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:03,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-06-05 21:00:03,996 INFO L430 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:03,996 INFO L82 PathProgramCache]: Analyzing trace with hash 545341211, now seen corresponding path program 504 times [2021-06-05 21:00:03,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:03,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314135522] [2021-06-05 21:00:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:04,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:04,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314135522] [2021-06-05 21:00:04,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314135522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:04,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:04,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:04,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485004041] [2021-06-05 21:00:04,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:04,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:04,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:04,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:04,065 INFO L87 Difference]: Start difference. First operand 1673 states and 6662 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:04,139 INFO L93 Difference]: Finished difference Result 3538 states and 13299 transitions. [2021-06-05 21:00:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:04,140 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 [2021-06-05 21:00:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:04,146 INFO L225 Difference]: With dead ends: 3538 [2021-06-05 21:00:04,146 INFO L226 Difference]: Without dead ends: 3245 [2021-06-05 21:00:04,147 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2021-06-05 21:00:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 1627. [2021-06-05 21:00:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 4.014145141451414) internal successors, (6527), 1626 states have internal predecessors, (6527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 6527 transitions. [2021-06-05 21:00:04,190 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 6527 transitions. Word has length 25 [2021-06-05 21:00:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:04,190 INFO L482 AbstractCegarLoop]: Abstraction has 1627 states and 6527 transitions. [2021-06-05 21:00:04,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 6527 transitions. [2021-06-05 21:00:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:04,192 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:04,192 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:04,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-06-05 21:00:04,192 INFO L430 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash 407122489, now seen corresponding path program 505 times [2021-06-05 21:00:04,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:04,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254765340] [2021-06-05 21:00:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:04,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:04,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254765340] [2021-06-05 21:00:04,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254765340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:04,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:04,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:04,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909657520] [2021-06-05 21:00:04,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:04,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:04,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:04,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:04,282 INFO L87 Difference]: Start difference. First operand 1627 states and 6527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:04,349 INFO L93 Difference]: Finished difference Result 3558 states and 13459 transitions. [2021-06-05 21:00:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:04,356 INFO L225 Difference]: With dead ends: 3558 [2021-06-05 21:00:04,357 INFO L226 Difference]: Without dead ends: 3311 [2021-06-05 21:00:04,357 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-06-05 21:00:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 1655. [2021-06-05 21:00:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 3.999395405078597) internal successors, (6615), 1654 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6615 transitions. [2021-06-05 21:00:04,401 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6615 transitions. Word has length 25 [2021-06-05 21:00:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:04,401 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6615 transitions. [2021-06-05 21:00:04,401 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) [2021-06-05 21:00:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6615 transitions. [2021-06-05 21:00:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:04,403 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:04,403 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:04,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-06-05 21:00:04,403 INFO L430 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:04,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1182812261, now seen corresponding path program 506 times [2021-06-05 21:00:04,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:04,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101537110] [2021-06-05 21:00:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:04,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:04,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101537110] [2021-06-05 21:00:04,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101537110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:04,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:04,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:04,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114768535] [2021-06-05 21:00:04,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:04,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:04,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:04,501 INFO L87 Difference]: Start difference. First operand 1655 states and 6615 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:04,592 INFO L93 Difference]: Finished difference Result 3596 states and 13584 transitions. [2021-06-05 21:00:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:04,592 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 [2021-06-05 21:00:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:04,599 INFO L225 Difference]: With dead ends: 3596 [2021-06-05 21:00:04,599 INFO L226 Difference]: Without dead ends: 3283 [2021-06-05 21:00:04,599 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-06-05 21:00:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 1627. [2021-06-05 21:00:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 4.0055350553505535) internal successors, (6513), 1626 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 6513 transitions. [2021-06-05 21:00:04,672 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 6513 transitions. Word has length 25 [2021-06-05 21:00:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:04,672 INFO L482 AbstractCegarLoop]: Abstraction has 1627 states and 6513 transitions. [2021-06-05 21:00:04,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 6513 transitions. [2021-06-05 21:00:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:04,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:04,674 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:04,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-06-05 21:00:04,674 INFO L430 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:04,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1488185115, now seen corresponding path program 507 times [2021-06-05 21:00:04,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:04,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986556830] [2021-06-05 21:00:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:04,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:04,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986556830] [2021-06-05 21:00:04,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986556830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:04,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:04,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:04,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843969794] [2021-06-05 21:00:04,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:04,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:04,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:04,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:04,777 INFO L87 Difference]: Start difference. First operand 1627 states and 6513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:04,830 INFO L93 Difference]: Finished difference Result 3556 states and 13440 transitions. [2021-06-05 21:00:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:04,837 INFO L225 Difference]: With dead ends: 3556 [2021-06-05 21:00:04,837 INFO L226 Difference]: Without dead ends: 3309 [2021-06-05 21:00:04,838 INFO L810 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 [2021-06-05 21:00:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2021-06-05 21:00:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 1655. [2021-06-05 21:00:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 3.9909310761789603) internal successors, (6601), 1654 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6601 transitions. [2021-06-05 21:00:04,880 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6601 transitions. Word has length 25 [2021-06-05 21:00:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:04,880 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6601 transitions. [2021-06-05 21:00:04,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6601 transitions. [2021-06-05 21:00:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:04,883 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:04,883 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:04,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-06-05 21:00:04,883 INFO L430 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1798484197, now seen corresponding path program 508 times [2021-06-05 21:00:04,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:04,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81045431] [2021-06-05 21:00:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:04,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:04,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81045431] [2021-06-05 21:00:04,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81045431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:04,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:04,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:04,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446734210] [2021-06-05 21:00:04,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:04,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:04,985 INFO L87 Difference]: Start difference. First operand 1655 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:05,057 INFO L93 Difference]: Finished difference Result 3592 states and 13560 transitions. [2021-06-05 21:00:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:05,058 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 [2021-06-05 21:00:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:05,065 INFO L225 Difference]: With dead ends: 3592 [2021-06-05 21:00:05,065 INFO L226 Difference]: Without dead ends: 3281 [2021-06-05 21:00:05,066 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-06-05 21:00:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1627. [2021-06-05 21:00:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 3.9969249692496924) internal successors, (6499), 1626 states have internal predecessors, (6499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 6499 transitions. [2021-06-05 21:00:05,112 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 6499 transitions. Word has length 25 [2021-06-05 21:00:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:05,112 INFO L482 AbstractCegarLoop]: Abstraction has 1627 states and 6499 transitions. [2021-06-05 21:00:05,112 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) [2021-06-05 21:00:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 6499 transitions. [2021-06-05 21:00:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:05,114 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:05,114 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:05,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-06-05 21:00:05,114 INFO L430 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:05,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1389620227, now seen corresponding path program 509 times [2021-06-05 21:00:05,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:05,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103901655] [2021-06-05 21:00:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:05,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:05,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103901655] [2021-06-05 21:00:05,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103901655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:05,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:05,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:05,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519487687] [2021-06-05 21:00:05,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:05,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:05,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:05,191 INFO L87 Difference]: Start difference. First operand 1627 states and 6499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:05,303 INFO L93 Difference]: Finished difference Result 3650 states and 13815 transitions. [2021-06-05 21:00:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:05,303 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 [2021-06-05 21:00:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:05,310 INFO L225 Difference]: With dead ends: 3650 [2021-06-05 21:00:05,310 INFO L226 Difference]: Without dead ends: 3365 [2021-06-05 21:00:05,311 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2021-06-05 21:00:05,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 1673. [2021-06-05 21:00:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 3.978468899521531) internal successors, (6652), 1672 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6652 transitions. [2021-06-05 21:00:05,354 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6652 transitions. Word has length 25 [2021-06-05 21:00:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:05,354 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6652 transitions. [2021-06-05 21:00:05,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6652 transitions. [2021-06-05 21:00:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:05,356 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:05,356 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:05,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-06-05 21:00:05,357 INFO L430 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:05,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:05,357 INFO L82 PathProgramCache]: Analyzing trace with hash 862010075, now seen corresponding path program 510 times [2021-06-05 21:00:05,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:05,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032188954] [2021-06-05 21:00:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:05,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:05,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032188954] [2021-06-05 21:00:05,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032188954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:05,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:05,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441268904] [2021-06-05 21:00:05,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:05,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:05,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:05,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:05,429 INFO L87 Difference]: Start difference. First operand 1673 states and 6652 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:05,514 INFO L93 Difference]: Finished difference Result 3648 states and 13764 transitions. [2021-06-05 21:00:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:05,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:05,521 INFO L225 Difference]: With dead ends: 3648 [2021-06-05 21:00:05,521 INFO L226 Difference]: Without dead ends: 3305 [2021-06-05 21:00:05,521 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2021-06-05 21:00:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 1613. [2021-06-05 21:00:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 4.004962779156328) internal successors, (6456), 1612 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6456 transitions. [2021-06-05 21:00:05,564 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 6456 transitions. Word has length 25 [2021-06-05 21:00:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:05,564 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 6456 transitions. [2021-06-05 21:00:05,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 6456 transitions. [2021-06-05 21:00:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:05,566 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:05,566 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:05,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-06-05 21:00:05,567 INFO L430 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:05,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1500092985, now seen corresponding path program 511 times [2021-06-05 21:00:05,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:05,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288533481] [2021-06-05 21:00:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:05,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:05,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288533481] [2021-06-05 21:00:05,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288533481] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:05,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:05,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:05,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237379672] [2021-06-05 21:00:05,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:05,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:05,684 INFO L87 Difference]: Start difference. First operand 1613 states and 6456 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:05,749 INFO L93 Difference]: Finished difference Result 3494 states and 13193 transitions. [2021-06-05 21:00:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:05,749 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 [2021-06-05 21:00:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:05,756 INFO L225 Difference]: With dead ends: 3494 [2021-06-05 21:00:05,756 INFO L226 Difference]: Without dead ends: 3247 [2021-06-05 21:00:05,756 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2021-06-05 21:00:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 1653. [2021-06-05 21:00:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 3.9951573849878934) internal successors, (6600), 1652 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 6600 transitions. [2021-06-05 21:00:05,799 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 6600 transitions. Word has length 25 [2021-06-05 21:00:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:05,799 INFO L482 AbstractCegarLoop]: Abstraction has 1653 states and 6600 transitions. [2021-06-05 21:00:05,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 6600 transitions. [2021-06-05 21:00:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:05,801 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:05,801 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:05,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-06-05 21:00:05,801 INFO L430 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:05,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:05,801 INFO L82 PathProgramCache]: Analyzing trace with hash -89841765, now seen corresponding path program 512 times [2021-06-05 21:00:05,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:05,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912968017] [2021-06-05 21:00:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:05,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:05,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912968017] [2021-06-05 21:00:05,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912968017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:05,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:05,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:05,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601168546] [2021-06-05 21:00:05,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:05,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:05,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:05,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:05,886 INFO L87 Difference]: Start difference. First operand 1653 states and 6600 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:05,955 INFO L93 Difference]: Finished difference Result 3532 states and 13318 transitions. [2021-06-05 21:00:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:05,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:05,962 INFO L225 Difference]: With dead ends: 3532 [2021-06-05 21:00:05,962 INFO L226 Difference]: Without dead ends: 3219 [2021-06-05 21:00:05,962 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-06-05 21:00:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 1625. [2021-06-05 21:00:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 4.002463054187192) internal successors, (6500), 1624 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6500 transitions. [2021-06-05 21:00:06,004 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6500 transitions. Word has length 25 [2021-06-05 21:00:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:06,005 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6500 transitions. [2021-06-05 21:00:06,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6500 transitions. [2021-06-05 21:00:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:06,007 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:06,007 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:06,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-06-05 21:00:06,007 INFO L430 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1549660729, now seen corresponding path program 513 times [2021-06-05 21:00:06,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:06,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096542103] [2021-06-05 21:00:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:06,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:06,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096542103] [2021-06-05 21:00:06,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096542103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:06,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:06,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:06,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134003789] [2021-06-05 21:00:06,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:06,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:06,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:06,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:06,084 INFO L87 Difference]: Start difference. First operand 1625 states and 6500 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:06,148 INFO L93 Difference]: Finished difference Result 3412 states and 12880 transitions. [2021-06-05 21:00:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:06,148 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 [2021-06-05 21:00:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:06,154 INFO L225 Difference]: With dead ends: 3412 [2021-06-05 21:00:06,154 INFO L226 Difference]: Without dead ends: 3165 [2021-06-05 21:00:06,155 INFO L810 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 [2021-06-05 21:00:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2021-06-05 21:00:06,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 1649. [2021-06-05 21:00:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 3.9902912621359223) internal successors, (6576), 1648 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 6576 transitions. [2021-06-05 21:00:06,197 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 6576 transitions. Word has length 25 [2021-06-05 21:00:06,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:06,197 INFO L482 AbstractCegarLoop]: Abstraction has 1649 states and 6576 transitions. [2021-06-05 21:00:06,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 6576 transitions. [2021-06-05 21:00:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:06,199 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:06,199 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:06,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-06-05 21:00:06,200 INFO L430 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:06,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash -392611271, now seen corresponding path program 514 times [2021-06-05 21:00:06,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:06,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586234545] [2021-06-05 21:00:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:06,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:06,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586234545] [2021-06-05 21:00:06,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586234545] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:06,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:06,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:06,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652714610] [2021-06-05 21:00:06,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:06,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:06,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:06,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:06,286 INFO L87 Difference]: Start difference. First operand 1649 states and 6576 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:06,346 INFO L93 Difference]: Finished difference Result 3236 states and 12303 transitions. [2021-06-05 21:00:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:06,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:06,352 INFO L225 Difference]: With dead ends: 3236 [2021-06-05 21:00:06,352 INFO L226 Difference]: Without dead ends: 2949 [2021-06-05 21:00:06,352 INFO L810 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 [2021-06-05 21:00:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2021-06-05 21:00:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1625. [2021-06-05 21:00:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 3.9950738916256157) internal successors, (6488), 1624 states have internal predecessors, (6488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6488 transitions. [2021-06-05 21:00:06,392 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6488 transitions. Word has length 25 [2021-06-05 21:00:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:06,392 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6488 transitions. [2021-06-05 21:00:06,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6488 transitions. [2021-06-05 21:00:06,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:06,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:06,394 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:06,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-06-05 21:00:06,394 INFO L430 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:06,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:06,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1328144613, now seen corresponding path program 515 times [2021-06-05 21:00:06,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:06,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473280552] [2021-06-05 21:00:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:06,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:06,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473280552] [2021-06-05 21:00:06,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473280552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:06,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:06,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:06,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020924290] [2021-06-05 21:00:06,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:06,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:06,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:06,474 INFO L87 Difference]: Start difference. First operand 1625 states and 6488 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:06,533 INFO L93 Difference]: Finished difference Result 3462 states and 13077 transitions. [2021-06-05 21:00:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:06,540 INFO L225 Difference]: With dead ends: 3462 [2021-06-05 21:00:06,540 INFO L226 Difference]: Without dead ends: 3177 [2021-06-05 21:00:06,540 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2021-06-05 21:00:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 1661. [2021-06-05 21:00:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 3.980722891566265) internal successors, (6608), 1660 states have internal predecessors, (6608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 6608 transitions. [2021-06-05 21:00:06,580 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 6608 transitions. Word has length 25 [2021-06-05 21:00:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:06,580 INFO L482 AbstractCegarLoop]: Abstraction has 1661 states and 6608 transitions. [2021-06-05 21:00:06,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 6608 transitions. [2021-06-05 21:00:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:06,583 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:06,583 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:06,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-06-05 21:00:06,583 INFO L430 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:06,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2069096711, now seen corresponding path program 516 times [2021-06-05 21:00:06,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:06,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106158828] [2021-06-05 21:00:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:06,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:06,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106158828] [2021-06-05 21:00:06,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106158828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:06,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:06,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:06,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661629968] [2021-06-05 21:00:06,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:06,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:06,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:06,664 INFO L87 Difference]: Start difference. First operand 1661 states and 6608 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:06,774 INFO L93 Difference]: Finished difference Result 3248 states and 12335 transitions. [2021-06-05 21:00:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:06,780 INFO L225 Difference]: With dead ends: 3248 [2021-06-05 21:00:06,780 INFO L226 Difference]: Without dead ends: 2937 [2021-06-05 21:00:06,780 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2021-06-05 21:00:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1613. [2021-06-05 21:00:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 4.0012406947890815) internal successors, (6450), 1612 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6450 transitions. [2021-06-05 21:00:06,820 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 6450 transitions. Word has length 25 [2021-06-05 21:00:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:06,820 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 6450 transitions. [2021-06-05 21:00:06,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 6450 transitions. [2021-06-05 21:00:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:06,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:06,822 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:06,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-06-05 21:00:06,822 INFO L430 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:06,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:06,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1888097947, now seen corresponding path program 517 times [2021-06-05 21:00:06,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:06,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415958271] [2021-06-05 21:00:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:06,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:06,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415958271] [2021-06-05 21:00:06,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415958271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:06,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:06,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:06,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982245398] [2021-06-05 21:00:06,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:06,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:06,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:06,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:06,912 INFO L87 Difference]: Start difference. First operand 1613 states and 6450 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:06,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:06,960 INFO L93 Difference]: Finished difference Result 3490 states and 13177 transitions. [2021-06-05 21:00:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:06,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:06,967 INFO L225 Difference]: With dead ends: 3490 [2021-06-05 21:00:06,967 INFO L226 Difference]: Without dead ends: 3243 [2021-06-05 21:00:06,967 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2021-06-05 21:00:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 1653. [2021-06-05 21:00:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 3.9915254237288136) internal successors, (6594), 1652 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 6594 transitions. [2021-06-05 21:00:07,009 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 6594 transitions. Word has length 25 [2021-06-05 21:00:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:07,009 INFO L482 AbstractCegarLoop]: Abstraction has 1653 states and 6594 transitions. [2021-06-05 21:00:07,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 6594 transitions. [2021-06-05 21:00:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:07,011 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:07,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:07,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-06-05 21:00:07,011 INFO L430 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1398571365, now seen corresponding path program 518 times [2021-06-05 21:00:07,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:07,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816716370] [2021-06-05 21:00:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:07,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:07,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816716370] [2021-06-05 21:00:07,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816716370] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:07,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:07,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:07,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867550938] [2021-06-05 21:00:07,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:07,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:07,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:07,091 INFO L87 Difference]: Start difference. First operand 1653 states and 6594 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:07,152 INFO L93 Difference]: Finished difference Result 3526 states and 13297 transitions. [2021-06-05 21:00:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:07,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:07,158 INFO L225 Difference]: With dead ends: 3526 [2021-06-05 21:00:07,158 INFO L226 Difference]: Without dead ends: 3215 [2021-06-05 21:00:07,159 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-06-05 21:00:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 1625. [2021-06-05 21:00:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 3.998768472906404) internal successors, (6494), 1624 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6494 transitions. [2021-06-05 21:00:07,200 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6494 transitions. Word has length 25 [2021-06-05 21:00:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:07,200 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6494 transitions. [2021-06-05 21:00:07,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6494 transitions. [2021-06-05 21:00:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:07,202 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:07,202 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:07,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-06-05 21:00:07,203 INFO L430 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash -227981703, now seen corresponding path program 519 times [2021-06-05 21:00:07,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:07,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722410475] [2021-06-05 21:00:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:07,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:07,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722410475] [2021-06-05 21:00:07,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722410475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:07,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:07,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:07,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050738522] [2021-06-05 21:00:07,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:07,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:07,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:07,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:07,274 INFO L87 Difference]: Start difference. First operand 1625 states and 6494 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:07,326 INFO L93 Difference]: Finished difference Result 3410 states and 12869 transitions. [2021-06-05 21:00:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:07,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:07,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:07,333 INFO L225 Difference]: With dead ends: 3410 [2021-06-05 21:00:07,333 INFO L226 Difference]: Without dead ends: 3163 [2021-06-05 21:00:07,333 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2021-06-05 21:00:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 1649. [2021-06-05 21:00:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 3.9866504854368934) internal successors, (6570), 1648 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 6570 transitions. [2021-06-05 21:00:07,375 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 6570 transitions. Word has length 25 [2021-06-05 21:00:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:07,375 INFO L482 AbstractCegarLoop]: Abstraction has 1649 states and 6570 transitions. [2021-06-05 21:00:07,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 6570 transitions. [2021-06-05 21:00:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:07,377 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:07,377 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:07,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-06-05 21:00:07,378 INFO L430 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:07,378 INFO L82 PathProgramCache]: Analyzing trace with hash -873513317, now seen corresponding path program 520 times [2021-06-05 21:00:07,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:07,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281429317] [2021-06-05 21:00:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:07,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:07,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281429317] [2021-06-05 21:00:07,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281429317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:07,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:07,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:07,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441080147] [2021-06-05 21:00:07,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:07,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:07,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:07,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:07,458 INFO L87 Difference]: Start difference. First operand 1649 states and 6570 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:07,523 INFO L93 Difference]: Finished difference Result 3234 states and 12292 transitions. [2021-06-05 21:00:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:07,524 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 [2021-06-05 21:00:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:07,529 INFO L225 Difference]: With dead ends: 3234 [2021-06-05 21:00:07,530 INFO L226 Difference]: Without dead ends: 2947 [2021-06-05 21:00:07,530 INFO L810 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 [2021-06-05 21:00:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-06-05 21:00:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1625. [2021-06-05 21:00:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 3.9913793103448274) internal successors, (6482), 1624 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6482 transitions. [2021-06-05 21:00:07,570 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6482 transitions. Word has length 25 [2021-06-05 21:00:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:07,570 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6482 transitions. [2021-06-05 21:00:07,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6482 transitions. [2021-06-05 21:00:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:07,573 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:07,573 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:07,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-06-05 21:00:07,573 INFO L430 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash 388810395, now seen corresponding path program 521 times [2021-06-05 21:00:07,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:07,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965534479] [2021-06-05 21:00:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:07,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:07,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965534479] [2021-06-05 21:00:07,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965534479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:07,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:07,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:07,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639684354] [2021-06-05 21:00:07,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:07,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:07,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:07,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:07,643 INFO L87 Difference]: Start difference. First operand 1625 states and 6482 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:07,714 INFO L93 Difference]: Finished difference Result 3458 states and 13061 transitions. [2021-06-05 21:00:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:07,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:07,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:07,721 INFO L225 Difference]: With dead ends: 3458 [2021-06-05 21:00:07,722 INFO L226 Difference]: Without dead ends: 3175 [2021-06-05 21:00:07,722 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2021-06-05 21:00:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 1661. [2021-06-05 21:00:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 3.97710843373494) internal successors, (6602), 1660 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 6602 transitions. [2021-06-05 21:00:07,764 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 6602 transitions. Word has length 25 [2021-06-05 21:00:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:07,764 INFO L482 AbstractCegarLoop]: Abstraction has 1661 states and 6602 transitions. [2021-06-05 21:00:07,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 6602 transitions. [2021-06-05 21:00:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:07,766 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:07,766 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:07,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-06-05 21:00:07,766 INFO L430 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1003334151, now seen corresponding path program 522 times [2021-06-05 21:00:07,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:07,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004215510] [2021-06-05 21:00:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:07,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:07,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004215510] [2021-06-05 21:00:07,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004215510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:07,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:07,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:07,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914364873] [2021-06-05 21:00:07,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:07,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:07,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:07,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:07,842 INFO L87 Difference]: Start difference. First operand 1661 states and 6602 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:07,906 INFO L93 Difference]: Finished difference Result 3246 states and 12324 transitions. [2021-06-05 21:00:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:07,913 INFO L225 Difference]: With dead ends: 3246 [2021-06-05 21:00:07,913 INFO L226 Difference]: Without dead ends: 2935 [2021-06-05 21:00:07,913 INFO L810 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 [2021-06-05 21:00:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-06-05 21:00:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1613. [2021-06-05 21:00:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 3.997518610421836) internal successors, (6444), 1612 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6444 transitions. [2021-06-05 21:00:07,955 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 6444 transitions. Word has length 25 [2021-06-05 21:00:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:07,955 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 6444 transitions. [2021-06-05 21:00:07,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 6444 transitions. [2021-06-05 21:00:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:07,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:07,957 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:07,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-06-05 21:00:07,958 INFO L430 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:07,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1682765059, now seen corresponding path program 523 times [2021-06-05 21:00:07,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:07,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631041930] [2021-06-05 21:00:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:08,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:08,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631041930] [2021-06-05 21:00:08,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631041930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:08,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:08,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:08,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242049547] [2021-06-05 21:00:08,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:08,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:08,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:08,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:08,026 INFO L87 Difference]: Start difference. First operand 1613 states and 6444 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:08,096 INFO L93 Difference]: Finished difference Result 3640 states and 13800 transitions. [2021-06-05 21:00:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:08,103 INFO L225 Difference]: With dead ends: 3640 [2021-06-05 21:00:08,104 INFO L226 Difference]: Without dead ends: 3355 [2021-06-05 21:00:08,104 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-06-05 21:00:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 1677. [2021-06-05 21:00:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1676 states have (on average 3.988066825775656) internal successors, (6684), 1676 states have internal predecessors, (6684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 6684 transitions. [2021-06-05 21:00:08,147 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 6684 transitions. Word has length 25 [2021-06-05 21:00:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:08,147 INFO L482 AbstractCegarLoop]: Abstraction has 1677 states and 6684 transitions. [2021-06-05 21:00:08,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 6684 transitions. [2021-06-05 21:00:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:08,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:08,150 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:08,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-06-05 21:00:08,150 INFO L430 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:08,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:08,150 INFO L82 PathProgramCache]: Analyzing trace with hash 568865243, now seen corresponding path program 524 times [2021-06-05 21:00:08,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:08,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850469383] [2021-06-05 21:00:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:08,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:08,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850469383] [2021-06-05 21:00:08,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850469383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:08,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:08,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:08,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95422517] [2021-06-05 21:00:08,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:08,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:08,218 INFO L87 Difference]: Start difference. First operand 1677 states and 6684 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:08,283 INFO L93 Difference]: Finished difference Result 3638 states and 13749 transitions. [2021-06-05 21:00:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:08,283 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 [2021-06-05 21:00:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:08,290 INFO L225 Difference]: With dead ends: 3638 [2021-06-05 21:00:08,290 INFO L226 Difference]: Without dead ends: 3309 [2021-06-05 21:00:08,290 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2021-06-05 21:00:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 1631. [2021-06-05 21:00:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 3.9957055214723924) internal successors, (6513), 1630 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6513 transitions. [2021-06-05 21:00:08,332 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6513 transitions. Word has length 25 [2021-06-05 21:00:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:08,332 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6513 transitions. [2021-06-05 21:00:08,332 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) [2021-06-05 21:00:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6513 transitions. [2021-06-05 21:00:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:08,334 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:08,334 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:08,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-06-05 21:00:08,334 INFO L430 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 496122587, now seen corresponding path program 525 times [2021-06-05 21:00:08,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:08,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106118941] [2021-06-05 21:00:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:08,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:08,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106118941] [2021-06-05 21:00:08,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106118941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:08,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:08,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:08,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591361915] [2021-06-05 21:00:08,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:08,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:08,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:08,414 INFO L87 Difference]: Start difference. First operand 1631 states and 6513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:08,480 INFO L93 Difference]: Finished difference Result 3516 states and 13306 transitions. [2021-06-05 21:00:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:08,486 INFO L225 Difference]: With dead ends: 3516 [2021-06-05 21:00:08,486 INFO L226 Difference]: Without dead ends: 3231 [2021-06-05 21:00:08,487 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-05 21:00:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1667. [2021-06-05 21:00:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9813925570228093) internal successors, (6633), 1666 states have internal predecessors, (6633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6633 transitions. [2021-06-05 21:00:08,528 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6633 transitions. Word has length 25 [2021-06-05 21:00:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:08,528 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6633 transitions. [2021-06-05 21:00:08,528 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) [2021-06-05 21:00:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6633 transitions. [2021-06-05 21:00:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:08,530 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:08,531 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:08,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-06-05 21:00:08,531 INFO L430 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:08,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1051910875, now seen corresponding path program 526 times [2021-06-05 21:00:08,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:08,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977227443] [2021-06-05 21:00:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:08,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:08,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977227443] [2021-06-05 21:00:08,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977227443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:08,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:08,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:08,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444340563] [2021-06-05 21:00:08,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:08,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:08,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:08,603 INFO L87 Difference]: Start difference. First operand 1667 states and 6633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:08,667 INFO L93 Difference]: Finished difference Result 3302 states and 12564 transitions. [2021-06-05 21:00:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:08,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:08,673 INFO L225 Difference]: With dead ends: 3302 [2021-06-05 21:00:08,673 INFO L226 Difference]: Without dead ends: 3003 [2021-06-05 21:00:08,673 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2021-06-05 21:00:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1631. [2021-06-05 21:00:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 3.9846625766871164) internal successors, (6495), 1630 states have internal predecessors, (6495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6495 transitions. [2021-06-05 21:00:08,713 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6495 transitions. Word has length 25 [2021-06-05 21:00:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:08,713 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6495 transitions. [2021-06-05 21:00:08,713 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) [2021-06-05 21:00:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6495 transitions. [2021-06-05 21:00:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:08,715 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:08,715 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:08,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-06-05 21:00:08,715 INFO L430 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:08,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1478470201, now seen corresponding path program 527 times [2021-06-05 21:00:08,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:08,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756876624] [2021-06-05 21:00:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:08,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:08,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756876624] [2021-06-05 21:00:08,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756876624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:08,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:08,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:08,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550568927] [2021-06-05 21:00:08,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:08,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:08,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:08,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:08,791 INFO L87 Difference]: Start difference. First operand 1631 states and 6495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:08,854 INFO L93 Difference]: Finished difference Result 3514 states and 13283 transitions. [2021-06-05 21:00:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:08,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:08,861 INFO L225 Difference]: With dead ends: 3514 [2021-06-05 21:00:08,861 INFO L226 Difference]: Without dead ends: 3231 [2021-06-05 21:00:08,861 INFO L810 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 [2021-06-05 21:00:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-05 21:00:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1667. [2021-06-05 21:00:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9705882352941178) internal successors, (6615), 1666 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6615 transitions. [2021-06-05 21:00:08,937 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6615 transitions. Word has length 25 [2021-06-05 21:00:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:08,937 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6615 transitions. [2021-06-05 21:00:08,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6615 transitions. [2021-06-05 21:00:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:08,940 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:08,940 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:08,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-06-05 21:00:08,940 INFO L430 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1271662235, now seen corresponding path program 528 times [2021-06-05 21:00:08,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:08,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617437180] [2021-06-05 21:00:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:09,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:09,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617437180] [2021-06-05 21:00:09,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617437180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:09,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:09,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:09,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704599906] [2021-06-05 21:00:09,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:09,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:09,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:09,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:09,014 INFO L87 Difference]: Start difference. First operand 1667 states and 6615 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:09,088 INFO L93 Difference]: Finished difference Result 3302 states and 12546 transitions. [2021-06-05 21:00:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:09,095 INFO L225 Difference]: With dead ends: 3302 [2021-06-05 21:00:09,095 INFO L226 Difference]: Without dead ends: 2979 [2021-06-05 21:00:09,095 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:09,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2021-06-05 21:00:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1607. [2021-06-05 21:00:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 4.0031133250311335) internal successors, (6429), 1606 states have internal predecessors, (6429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6429 transitions. [2021-06-05 21:00:09,135 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6429 transitions. Word has length 25 [2021-06-05 21:00:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:09,135 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6429 transitions. [2021-06-05 21:00:09,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6429 transitions. [2021-06-05 21:00:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:09,137 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:09,137 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:09,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-06-05 21:00:09,137 INFO L430 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -382263781, now seen corresponding path program 529 times [2021-06-05 21:00:09,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:09,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800356292] [2021-06-05 21:00:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:09,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:09,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800356292] [2021-06-05 21:00:09,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800356292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:09,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:09,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:09,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168209909] [2021-06-05 21:00:09,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:09,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:09,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:09,213 INFO L87 Difference]: Start difference. First operand 1607 states and 6429 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:09,265 INFO L93 Difference]: Finished difference Result 3372 states and 12644 transitions. [2021-06-05 21:00:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:09,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:09,272 INFO L225 Difference]: With dead ends: 3372 [2021-06-05 21:00:09,272 INFO L226 Difference]: Without dead ends: 3125 [2021-06-05 21:00:09,272 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2021-06-05 21:00:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 1635. [2021-06-05 21:00:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.988372093023256) internal successors, (6517), 1634 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6517 transitions. [2021-06-05 21:00:09,313 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6517 transitions. Word has length 25 [2021-06-05 21:00:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:09,313 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6517 transitions. [2021-06-05 21:00:09,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6517 transitions. [2021-06-05 21:00:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:09,315 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:09,315 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:09,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-06-05 21:00:09,316 INFO L430 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1972198531, now seen corresponding path program 530 times [2021-06-05 21:00:09,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:09,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376147858] [2021-06-05 21:00:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:09,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:09,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376147858] [2021-06-05 21:00:09,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376147858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:09,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:09,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:09,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084961779] [2021-06-05 21:00:09,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:09,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:09,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:09,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:09,408 INFO L87 Difference]: Start difference. First operand 1635 states and 6517 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:09,484 INFO L93 Difference]: Finished difference Result 3410 states and 12769 transitions. [2021-06-05 21:00:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:09,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:09,491 INFO L225 Difference]: With dead ends: 3410 [2021-06-05 21:00:09,491 INFO L226 Difference]: Without dead ends: 3097 [2021-06-05 21:00:09,491 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-06-05 21:00:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1607. [2021-06-05 21:00:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.9981320049813203) internal successors, (6421), 1606 states have internal predecessors, (6421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6421 transitions. [2021-06-05 21:00:09,532 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6421 transitions. Word has length 25 [2021-06-05 21:00:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:09,532 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6421 transitions. [2021-06-05 21:00:09,532 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) [2021-06-05 21:00:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6421 transitions. [2021-06-05 21:00:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:09,534 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:09,534 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:09,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-06-05 21:00:09,534 INFO L430 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:09,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2070510053, now seen corresponding path program 531 times [2021-06-05 21:00:09,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:09,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002469524] [2021-06-05 21:00:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:09,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:09,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002469524] [2021-06-05 21:00:09,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002469524] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:09,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:09,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:09,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964350048] [2021-06-05 21:00:09,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:09,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:09,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:09,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:09,605 INFO L87 Difference]: Start difference. First operand 1607 states and 6421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:09,666 INFO L93 Difference]: Finished difference Result 3322 states and 12431 transitions. [2021-06-05 21:00:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:09,666 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 [2021-06-05 21:00:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:09,673 INFO L225 Difference]: With dead ends: 3322 [2021-06-05 21:00:09,673 INFO L226 Difference]: Without dead ends: 3075 [2021-06-05 21:00:09,673 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-06-05 21:00:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 1623. [2021-06-05 21:00:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1622 states have (on average 3.9882860665844637) internal successors, (6469), 1622 states have internal predecessors, (6469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 6469 transitions. [2021-06-05 21:00:09,714 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 6469 transitions. Word has length 25 [2021-06-05 21:00:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:09,714 INFO L482 AbstractCegarLoop]: Abstraction has 1623 states and 6469 transitions. [2021-06-05 21:00:09,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 6469 transitions. [2021-06-05 21:00:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:09,716 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:09,716 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:09,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-06-05 21:00:09,717 INFO L430 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:09,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash -390013413, now seen corresponding path program 532 times [2021-06-05 21:00:09,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:09,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769442368] [2021-06-05 21:00:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:09,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:09,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769442368] [2021-06-05 21:00:09,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769442368] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:09,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:09,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:09,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210209434] [2021-06-05 21:00:09,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:09,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:09,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:09,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:09,823 INFO L87 Difference]: Start difference. First operand 1623 states and 6469 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:09,897 INFO L93 Difference]: Finished difference Result 3322 states and 12415 transitions. [2021-06-05 21:00:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:09,903 INFO L225 Difference]: With dead ends: 3322 [2021-06-05 21:00:09,903 INFO L226 Difference]: Without dead ends: 3059 [2021-06-05 21:00:09,903 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2021-06-05 21:00:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 1607. [2021-06-05 21:00:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.993150684931507) internal successors, (6413), 1606 states have internal predecessors, (6413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6413 transitions. [2021-06-05 21:00:09,946 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6413 transitions. Word has length 25 [2021-06-05 21:00:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:09,946 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6413 transitions. [2021-06-05 21:00:09,946 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) [2021-06-05 21:00:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6413 transitions. [2021-06-05 21:00:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:09,948 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:09,948 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:09,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-06-05 21:00:09,948 INFO L430 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -653348099, now seen corresponding path program 533 times [2021-06-05 21:00:09,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:09,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632138548] [2021-06-05 21:00:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:10,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:10,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632138548] [2021-06-05 21:00:10,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632138548] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:10,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:10,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:10,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751974450] [2021-06-05 21:00:10,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:10,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:10,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:10,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:10,030 INFO L87 Difference]: Start difference. First operand 1607 states and 6413 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:10,094 INFO L93 Difference]: Finished difference Result 3410 states and 12781 transitions. [2021-06-05 21:00:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:10,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:10,101 INFO L225 Difference]: With dead ends: 3410 [2021-06-05 21:00:10,101 INFO L226 Difference]: Without dead ends: 3125 [2021-06-05 21:00:10,101 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2021-06-05 21:00:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 1635. [2021-06-05 21:00:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.978580171358629) internal successors, (6501), 1634 states have internal predecessors, (6501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6501 transitions. [2021-06-05 21:00:10,142 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6501 transitions. Word has length 25 [2021-06-05 21:00:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:10,142 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6501 transitions. [2021-06-05 21:00:10,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6501 transitions. [2021-06-05 21:00:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:10,144 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:10,144 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:10,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-06-05 21:00:10,144 INFO L430 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:10,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2045492645, now seen corresponding path program 534 times [2021-06-05 21:00:10,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:10,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774326249] [2021-06-05 21:00:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:10,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:10,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774326249] [2021-06-05 21:00:10,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774326249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:10,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:10,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:10,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785900574] [2021-06-05 21:00:10,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:10,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:10,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:10,220 INFO L87 Difference]: Start difference. First operand 1635 states and 6501 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:10,285 INFO L93 Difference]: Finished difference Result 3372 states and 12600 transitions. [2021-06-05 21:00:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:10,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:10,291 INFO L225 Difference]: With dead ends: 3372 [2021-06-05 21:00:10,292 INFO L226 Difference]: Without dead ends: 3089 [2021-06-05 21:00:10,292 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-06-05 21:00:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1599. [2021-06-05 21:00:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.9981226533166456) internal successors, (6389), 1598 states have internal predecessors, (6389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 6389 transitions. [2021-06-05 21:00:10,334 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 6389 transitions. Word has length 25 [2021-06-05 21:00:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:10,334 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 6389 transitions. [2021-06-05 21:00:10,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 6389 transitions. [2021-06-05 21:00:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:10,337 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:10,337 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:10,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-06-05 21:00:10,337 INFO L430 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1889641977, now seen corresponding path program 535 times [2021-06-05 21:00:10,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:10,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311878621] [2021-06-05 21:00:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:10,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:10,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311878621] [2021-06-05 21:00:10,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311878621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:10,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:10,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:10,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106683435] [2021-06-05 21:00:10,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:10,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:10,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:10,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:10,420 INFO L87 Difference]: Start difference. First operand 1599 states and 6389 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:10,468 INFO L93 Difference]: Finished difference Result 3368 states and 12636 transitions. [2021-06-05 21:00:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:10,474 INFO L225 Difference]: With dead ends: 3368 [2021-06-05 21:00:10,475 INFO L226 Difference]: Without dead ends: 3121 [2021-06-05 21:00:10,475 INFO L810 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 [2021-06-05 21:00:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-06-05 21:00:10,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1599. [2021-06-05 21:00:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.9806007509386734) internal successors, (6361), 1598 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 6361 transitions. [2021-06-05 21:00:10,515 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 6361 transitions. Word has length 25 [2021-06-05 21:00:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:10,515 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 6361 transitions. [2021-06-05 21:00:10,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 6361 transitions. [2021-06-05 21:00:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:10,517 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:10,517 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:10,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-06-05 21:00:10,517 INFO L430 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash 299707227, now seen corresponding path program 536 times [2021-06-05 21:00:10,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:10,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012832404] [2021-06-05 21:00:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:10,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:10,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012832404] [2021-06-05 21:00:10,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012832404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:10,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:10,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:10,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440290595] [2021-06-05 21:00:10,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:10,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:10,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:10,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:10,595 INFO L87 Difference]: Start difference. First operand 1599 states and 6361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:10,656 INFO L93 Difference]: Finished difference Result 3406 states and 12761 transitions. [2021-06-05 21:00:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:10,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:10,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:10,663 INFO L225 Difference]: With dead ends: 3406 [2021-06-05 21:00:10,663 INFO L226 Difference]: Without dead ends: 3093 [2021-06-05 21:00:10,663 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-06-05 21:00:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 1571. [2021-06-05 21:00:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.9878980891719746) internal successors, (6261), 1570 states have internal predecessors, (6261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6261 transitions. [2021-06-05 21:00:10,701 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6261 transitions. Word has length 25 [2021-06-05 21:00:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:10,701 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6261 transitions. [2021-06-05 21:00:10,701 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) [2021-06-05 21:00:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6261 transitions. [2021-06-05 21:00:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:10,703 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:10,703 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:10,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-06-05 21:00:10,704 INFO L430 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1035704805, now seen corresponding path program 537 times [2021-06-05 21:00:10,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:10,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602974703] [2021-06-05 21:00:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:10,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:10,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602974703] [2021-06-05 21:00:10,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602974703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:10,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:10,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:10,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827788868] [2021-06-05 21:00:10,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:10,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:10,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:10,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:10,777 INFO L87 Difference]: Start difference. First operand 1571 states and 6261 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:10,823 INFO L93 Difference]: Finished difference Result 3286 states and 12323 transitions. [2021-06-05 21:00:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:10,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:10,830 INFO L225 Difference]: With dead ends: 3286 [2021-06-05 21:00:10,830 INFO L226 Difference]: Without dead ends: 3039 [2021-06-05 21:00:10,830 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-06-05 21:00:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1595. [2021-06-05 21:00:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.9755332496863236) internal successors, (6337), 1594 states have internal predecessors, (6337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 6337 transitions. [2021-06-05 21:00:10,868 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 6337 transitions. Word has length 25 [2021-06-05 21:00:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:10,869 INFO L482 AbstractCegarLoop]: Abstraction has 1595 states and 6337 transitions. [2021-06-05 21:00:10,869 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) [2021-06-05 21:00:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 6337 transitions. [2021-06-05 21:00:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:10,871 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:10,871 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:10,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-06-05 21:00:10,871 INFO L430 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:10,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1316990491, now seen corresponding path program 538 times [2021-06-05 21:00:10,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:10,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898217094] [2021-06-05 21:00:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:10,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:10,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898217094] [2021-06-05 21:00:10,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898217094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:10,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:10,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:10,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254407115] [2021-06-05 21:00:10,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:10,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:10,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:10,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:10,949 INFO L87 Difference]: Start difference. First operand 1595 states and 6337 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:11,014 INFO L93 Difference]: Finished difference Result 3110 states and 11746 transitions. [2021-06-05 21:00:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:11,020 INFO L225 Difference]: With dead ends: 3110 [2021-06-05 21:00:11,020 INFO L226 Difference]: Without dead ends: 2823 [2021-06-05 21:00:11,020 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-06-05 21:00:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 1571. [2021-06-05 21:00:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.980254777070064) internal successors, (6249), 1570 states have internal predecessors, (6249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6249 transitions. [2021-06-05 21:00:11,076 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6249 transitions. Word has length 25 [2021-06-05 21:00:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:11,077 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6249 transitions. [2021-06-05 21:00:11,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6249 transitions. [2021-06-05 21:00:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:11,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:11,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:11,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-06-05 21:00:11,079 INFO L430 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:11,080 INFO L82 PathProgramCache]: Analyzing trace with hash 381457149, now seen corresponding path program 539 times [2021-06-05 21:00:11,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:11,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438111740] [2021-06-05 21:00:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:11,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:11,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438111740] [2021-06-05 21:00:11,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438111740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:11,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:11,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:11,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766314301] [2021-06-05 21:00:11,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:11,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:11,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:11,184 INFO L87 Difference]: Start difference. First operand 1571 states and 6249 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:11,248 INFO L93 Difference]: Finished difference Result 3336 states and 12520 transitions. [2021-06-05 21:00:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:11,254 INFO L225 Difference]: With dead ends: 3336 [2021-06-05 21:00:11,254 INFO L226 Difference]: Without dead ends: 3051 [2021-06-05 21:00:11,255 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-06-05 21:00:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1607. [2021-06-05 21:00:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.9657534246575343) internal successors, (6369), 1606 states have internal predecessors, (6369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6369 transitions. [2021-06-05 21:00:11,295 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6369 transitions. Word has length 25 [2021-06-05 21:00:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:11,295 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6369 transitions. [2021-06-05 21:00:11,295 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) [2021-06-05 21:00:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6369 transitions. [2021-06-05 21:00:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:11,297 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:11,297 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:11,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-06-05 21:00:11,297 INFO L430 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash -359494949, now seen corresponding path program 540 times [2021-06-05 21:00:11,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:11,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907556821] [2021-06-05 21:00:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:11,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:11,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907556821] [2021-06-05 21:00:11,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907556821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:11,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:11,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:11,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740654347] [2021-06-05 21:00:11,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:11,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:11,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:11,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:11,395 INFO L87 Difference]: Start difference. First operand 1607 states and 6369 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:11,459 INFO L93 Difference]: Finished difference Result 3122 states and 11778 transitions. [2021-06-05 21:00:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:11,459 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 [2021-06-05 21:00:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:11,465 INFO L225 Difference]: With dead ends: 3122 [2021-06-05 21:00:11,465 INFO L226 Difference]: Without dead ends: 2811 [2021-06-05 21:00:11,465 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-06-05 21:00:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1559. [2021-06-05 21:00:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.9878048780487805) internal successors, (6213), 1558 states have internal predecessors, (6213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6213 transitions. [2021-06-05 21:00:11,504 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6213 transitions. Word has length 25 [2021-06-05 21:00:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:11,504 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6213 transitions. [2021-06-05 21:00:11,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6213 transitions. [2021-06-05 21:00:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:11,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:11,506 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:11,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-06-05 21:00:11,506 INFO L430 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:11,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1680548325, now seen corresponding path program 541 times [2021-06-05 21:00:11,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:11,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727110091] [2021-06-05 21:00:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:11,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:11,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727110091] [2021-06-05 21:00:11,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727110091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:11,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:11,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:11,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893750195] [2021-06-05 21:00:11,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:11,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:11,576 INFO L87 Difference]: Start difference. First operand 1559 states and 6213 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:11,629 INFO L93 Difference]: Finished difference Result 3208 states and 11994 transitions. [2021-06-05 21:00:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:11,635 INFO L225 Difference]: With dead ends: 3208 [2021-06-05 21:00:11,635 INFO L226 Difference]: Without dead ends: 2961 [2021-06-05 21:00:11,635 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-06-05 21:00:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1583. [2021-06-05 21:00:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.9804045512010116) internal successors, (6297), 1582 states have internal predecessors, (6297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6297 transitions. [2021-06-05 21:00:11,674 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6297 transitions. Word has length 25 [2021-06-05 21:00:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:11,674 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6297 transitions. [2021-06-05 21:00:11,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6297 transitions. [2021-06-05 21:00:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:11,677 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:11,677 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:11,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-06-05 21:00:11,677 INFO L430 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:11,677 INFO L82 PathProgramCache]: Analyzing trace with hash -51685, now seen corresponding path program 542 times [2021-06-05 21:00:11,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:11,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102517775] [2021-06-05 21:00:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:11,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:11,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102517775] [2021-06-05 21:00:11,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102517775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:11,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:11,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:11,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316378170] [2021-06-05 21:00:11,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:11,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:11,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:11,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:11,747 INFO L87 Difference]: Start difference. First operand 1583 states and 6297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:11,819 INFO L93 Difference]: Finished difference Result 3208 states and 11978 transitions. [2021-06-05 21:00:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:11,825 INFO L225 Difference]: With dead ends: 3208 [2021-06-05 21:00:11,825 INFO L226 Difference]: Without dead ends: 2945 [2021-06-05 21:00:11,825 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-06-05 21:00:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1567. [2021-06-05 21:00:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.9853128991060025) internal successors, (6241), 1566 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 6241 transitions. [2021-06-05 21:00:11,867 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 6241 transitions. Word has length 25 [2021-06-05 21:00:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:11,868 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 6241 transitions. [2021-06-05 21:00:11,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 6241 transitions. [2021-06-05 21:00:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:11,870 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:11,870 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:11,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-06-05 21:00:11,870 INFO L430 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:11,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1767622009, now seen corresponding path program 543 times [2021-06-05 21:00:11,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:11,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685767181] [2021-06-05 21:00:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:11,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:11,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685767181] [2021-06-05 21:00:11,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685767181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:11,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:11,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274324032] [2021-06-05 21:00:11,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:11,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:11,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:11,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:11,939 INFO L87 Difference]: Start difference. First operand 1567 states and 6241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:11,997 INFO L93 Difference]: Finished difference Result 3152 states and 11790 transitions. [2021-06-05 21:00:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:11,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:12,003 INFO L225 Difference]: With dead ends: 3152 [2021-06-05 21:00:12,003 INFO L226 Difference]: Without dead ends: 2905 [2021-06-05 21:00:12,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-06-05 21:00:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1591. [2021-06-05 21:00:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 3.972955974842767) internal successors, (6317), 1590 states have internal predecessors, (6317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 6317 transitions. [2021-06-05 21:00:12,042 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 6317 transitions. Word has length 25 [2021-06-05 21:00:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:12,042 INFO L482 AbstractCegarLoop]: Abstraction has 1591 states and 6317 transitions. [2021-06-05 21:00:12,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 6317 transitions. [2021-06-05 21:00:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:12,044 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:12,044 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:12,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-06-05 21:00:12,045 INFO L430 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:12,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1885006309, now seen corresponding path program 544 times [2021-06-05 21:00:12,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:12,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52812699] [2021-06-05 21:00:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:12,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:12,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52812699] [2021-06-05 21:00:12,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52812699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:12,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:12,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:12,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26942533] [2021-06-05 21:00:12,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:12,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:12,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:12,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:12,114 INFO L87 Difference]: Start difference. First operand 1591 states and 6317 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:12,182 INFO L93 Difference]: Finished difference Result 2976 states and 11213 transitions. [2021-06-05 21:00:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:12,188 INFO L225 Difference]: With dead ends: 2976 [2021-06-05 21:00:12,188 INFO L226 Difference]: Without dead ends: 2689 [2021-06-05 21:00:12,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-06-05 21:00:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1567. [2021-06-05 21:00:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.980204342273308) internal successors, (6233), 1566 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 6233 transitions. [2021-06-05 21:00:12,226 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 6233 transitions. Word has length 25 [2021-06-05 21:00:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:12,226 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 6233 transitions. [2021-06-05 21:00:12,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 6233 transitions. [2021-06-05 21:00:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:12,228 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:12,228 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:12,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-06-05 21:00:12,228 INFO L430 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:12,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1787330075, now seen corresponding path program 545 times [2021-06-05 21:00:12,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:12,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328751865] [2021-06-05 21:00:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:12,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:12,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328751865] [2021-06-05 21:00:12,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328751865] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:12,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:12,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:12,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937459999] [2021-06-05 21:00:12,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:12,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:12,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:12,303 INFO L87 Difference]: Start difference. First operand 1567 states and 6233 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:12,386 INFO L93 Difference]: Finished difference Result 2960 states and 11157 transitions. [2021-06-05 21:00:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:12,392 INFO L225 Difference]: With dead ends: 2960 [2021-06-05 21:00:12,393 INFO L226 Difference]: Without dead ends: 2713 [2021-06-05 21:00:12,393 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-06-05 21:00:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1591. [2021-06-05 21:00:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 3.9679245283018867) internal successors, (6309), 1590 states have internal predecessors, (6309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 6309 transitions. [2021-06-05 21:00:12,438 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 6309 transitions. Word has length 25 [2021-06-05 21:00:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:12,438 INFO L482 AbstractCegarLoop]: Abstraction has 1591 states and 6309 transitions. [2021-06-05 21:00:12,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 6309 transitions. [2021-06-05 21:00:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:12,440 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:12,440 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:12,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-06-05 21:00:12,441 INFO L430 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:12,441 INFO L82 PathProgramCache]: Analyzing trace with hash -256006919, now seen corresponding path program 546 times [2021-06-05 21:00:12,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:12,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442072825] [2021-06-05 21:00:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:12,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:12,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442072825] [2021-06-05 21:00:12,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442072825] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:12,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:12,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:12,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664573787] [2021-06-05 21:00:12,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:12,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:12,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:12,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:12,514 INFO L87 Difference]: Start difference. First operand 1591 states and 6309 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:12,591 INFO L93 Difference]: Finished difference Result 2712 states and 10304 transitions. [2021-06-05 21:00:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:12,592 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 [2021-06-05 21:00:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:12,601 INFO L225 Difference]: With dead ends: 2712 [2021-06-05 21:00:12,601 INFO L226 Difference]: Without dead ends: 2417 [2021-06-05 21:00:12,601 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:12,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-06-05 21:00:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1559. [2021-06-05 21:00:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.985237483953787) internal successors, (6209), 1558 states have internal predecessors, (6209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6209 transitions. [2021-06-05 21:00:12,639 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6209 transitions. Word has length 25 [2021-06-05 21:00:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:12,639 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6209 transitions. [2021-06-05 21:00:12,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6209 transitions. [2021-06-05 21:00:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:12,641 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:12,641 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:12,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-06-05 21:00:12,641 INFO L430 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:12,641 INFO L82 PathProgramCache]: Analyzing trace with hash -956444035, now seen corresponding path program 547 times [2021-06-05 21:00:12,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:12,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198196247] [2021-06-05 21:00:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:12,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:12,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198196247] [2021-06-05 21:00:12,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198196247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:12,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:12,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:12,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850878694] [2021-06-05 21:00:12,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:12,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:12,739 INFO L87 Difference]: Start difference. First operand 1559 states and 6209 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:12,804 INFO L93 Difference]: Finished difference Result 3312 states and 12424 transitions. [2021-06-05 21:00:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:12,804 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 [2021-06-05 21:00:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:12,810 INFO L225 Difference]: With dead ends: 3312 [2021-06-05 21:00:12,810 INFO L226 Difference]: Without dead ends: 3027 [2021-06-05 21:00:12,810 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2021-06-05 21:00:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 1599. [2021-06-05 21:00:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.9755944931163953) internal successors, (6353), 1598 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 6353 transitions. [2021-06-05 21:00:12,849 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 6353 transitions. Word has length 25 [2021-06-05 21:00:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:12,849 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 6353 transitions. [2021-06-05 21:00:12,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 6353 transitions. [2021-06-05 21:00:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:12,851 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:12,851 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:12,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-06-05 21:00:12,851 INFO L430 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:12,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:12,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1946378715, now seen corresponding path program 548 times [2021-06-05 21:00:12,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:12,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709924514] [2021-06-05 21:00:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:12,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:12,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709924514] [2021-06-05 21:00:12,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709924514] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:12,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:12,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:12,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109301583] [2021-06-05 21:00:12,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:12,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:12,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:12,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:12,918 INFO L87 Difference]: Start difference. First operand 1599 states and 6353 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:12,984 INFO L93 Difference]: Finished difference Result 3274 states and 12243 transitions. [2021-06-05 21:00:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:12,990 INFO L225 Difference]: With dead ends: 3274 [2021-06-05 21:00:12,990 INFO L226 Difference]: Without dead ends: 2999 [2021-06-05 21:00:12,991 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2021-06-05 21:00:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1571. [2021-06-05 21:00:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.9828025477707008) internal successors, (6253), 1570 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6253 transitions. [2021-06-05 21:00:13,029 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6253 transitions. Word has length 25 [2021-06-05 21:00:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:13,029 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6253 transitions. [2021-06-05 21:00:13,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6253 transitions. [2021-06-05 21:00:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:13,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:13,031 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:13,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-06-05 21:00:13,031 INFO L430 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:13,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1803240997, now seen corresponding path program 549 times [2021-06-05 21:00:13,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:13,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828691621] [2021-06-05 21:00:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:13,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:13,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828691621] [2021-06-05 21:00:13,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828691621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:13,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:13,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:13,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185864805] [2021-06-05 21:00:13,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:13,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:13,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:13,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:13,105 INFO L87 Difference]: Start difference. First operand 1571 states and 6253 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:13,162 INFO L93 Difference]: Finished difference Result 3206 states and 12011 transitions. [2021-06-05 21:00:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:13,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:13,168 INFO L225 Difference]: With dead ends: 3206 [2021-06-05 21:00:13,169 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 21:00:13,169 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 21:00:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1607. [2021-06-05 21:00:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.968244084682441) internal successors, (6373), 1606 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6373 transitions. [2021-06-05 21:00:13,221 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6373 transitions. Word has length 25 [2021-06-05 21:00:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:13,221 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6373 transitions. [2021-06-05 21:00:13,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6373 transitions. [2021-06-05 21:00:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:13,223 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:13,223 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:13,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-06-05 21:00:13,223 INFO L430 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash 40417883, now seen corresponding path program 550 times [2021-06-05 21:00:13,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:13,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85801571] [2021-06-05 21:00:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:13,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:13,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85801571] [2021-06-05 21:00:13,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85801571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:13,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:13,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:13,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266557924] [2021-06-05 21:00:13,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:13,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:13,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:13,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:13,296 INFO L87 Difference]: Start difference. First operand 1607 states and 6373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:13,362 INFO L93 Difference]: Finished difference Result 2992 states and 11269 transitions. [2021-06-05 21:00:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:13,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:13,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:13,367 INFO L225 Difference]: With dead ends: 2992 [2021-06-05 21:00:13,367 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 21:00:13,367 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 21:00:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1571. [2021-06-05 21:00:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.97515923566879) internal successors, (6241), 1570 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6241 transitions. [2021-06-05 21:00:13,404 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6241 transitions. Word has length 25 [2021-06-05 21:00:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:13,404 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6241 transitions. [2021-06-05 21:00:13,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6241 transitions. [2021-06-05 21:00:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:13,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:13,406 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:13,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-06-05 21:00:13,406 INFO L430 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:13,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1438983623, now seen corresponding path program 551 times [2021-06-05 21:00:13,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:13,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684707164] [2021-06-05 21:00:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:13,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:13,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684707164] [2021-06-05 21:00:13,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684707164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:13,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:13,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:13,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980849847] [2021-06-05 21:00:13,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:13,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:13,477 INFO L87 Difference]: Start difference. First operand 1571 states and 6241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:13,541 INFO L93 Difference]: Finished difference Result 2964 states and 11165 transitions. [2021-06-05 21:00:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:13,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:13,547 INFO L225 Difference]: With dead ends: 2964 [2021-06-05 21:00:13,547 INFO L226 Difference]: Without dead ends: 2717 [2021-06-05 21:00:13,547 INFO L810 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 [2021-06-05 21:00:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2021-06-05 21:00:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1595. [2021-06-05 21:00:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.9629861982434127) internal successors, (6317), 1594 states have internal predecessors, (6317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 6317 transitions. [2021-06-05 21:00:13,587 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 6317 transitions. Word has length 25 [2021-06-05 21:00:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:13,587 INFO L482 AbstractCegarLoop]: Abstraction has 1595 states and 6317 transitions. [2021-06-05 21:00:13,587 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) [2021-06-05 21:00:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 6317 transitions. [2021-06-05 21:00:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:13,589 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:13,589 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:13,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-06-05 21:00:13,590 INFO L430 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash -357920997, now seen corresponding path program 552 times [2021-06-05 21:00:13,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:13,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880361300] [2021-06-05 21:00:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:13,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:13,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880361300] [2021-06-05 21:00:13,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880361300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:13,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:13,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:13,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232519252] [2021-06-05 21:00:13,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:13,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:13,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:13,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:13,661 INFO L87 Difference]: Start difference. First operand 1595 states and 6317 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:13,731 INFO L93 Difference]: Finished difference Result 2716 states and 10312 transitions. [2021-06-05 21:00:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:13,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:13,736 INFO L225 Difference]: With dead ends: 2716 [2021-06-05 21:00:13,736 INFO L226 Difference]: Without dead ends: 2413 [2021-06-05 21:00:13,737 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-06-05 21:00:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1555. [2021-06-05 21:00:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9890604890604893) internal successors, (6199), 1554 states have internal predecessors, (6199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6199 transitions. [2021-06-05 21:00:13,773 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6199 transitions. Word has length 25 [2021-06-05 21:00:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:13,773 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6199 transitions. [2021-06-05 21:00:13,773 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) [2021-06-05 21:00:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6199 transitions. [2021-06-05 21:00:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:13,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:13,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:13,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-06-05 21:00:13,776 INFO L430 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:13,776 INFO L82 PathProgramCache]: Analyzing trace with hash -302743043, now seen corresponding path program 553 times [2021-06-05 21:00:13,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:13,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629488744] [2021-06-05 21:00:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:13,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:13,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629488744] [2021-06-05 21:00:13,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629488744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:13,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:13,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:13,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117275035] [2021-06-05 21:00:13,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:13,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:13,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:13,860 INFO L87 Difference]: Start difference. First operand 1555 states and 6199 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:13,911 INFO L93 Difference]: Finished difference Result 3242 states and 12131 transitions. [2021-06-05 21:00:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:13,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:13,917 INFO L225 Difference]: With dead ends: 3242 [2021-06-05 21:00:13,917 INFO L226 Difference]: Without dead ends: 2995 [2021-06-05 21:00:13,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-06-05 21:00:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1583. [2021-06-05 21:00:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.9740834386852084) internal successors, (6287), 1582 states have internal predecessors, (6287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6287 transitions. [2021-06-05 21:00:13,962 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6287 transitions. Word has length 25 [2021-06-05 21:00:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:13,962 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6287 transitions. [2021-06-05 21:00:13,962 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) [2021-06-05 21:00:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6287 transitions. [2021-06-05 21:00:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:13,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:13,965 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:13,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-06-05 21:00:13,965 INFO L430 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash 705554941, now seen corresponding path program 554 times [2021-06-05 21:00:13,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:13,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545859085] [2021-06-05 21:00:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:14,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:14,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545859085] [2021-06-05 21:00:14,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545859085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:14,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:14,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:14,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490681370] [2021-06-05 21:00:14,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:14,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:14,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:14,066 INFO L87 Difference]: Start difference. First operand 1583 states and 6287 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:14,158 INFO L93 Difference]: Finished difference Result 3278 states and 12251 transitions. [2021-06-05 21:00:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:14,164 INFO L225 Difference]: With dead ends: 3278 [2021-06-05 21:00:14,164 INFO L226 Difference]: Without dead ends: 2967 [2021-06-05 21:00:14,164 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-06-05 21:00:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1555. [2021-06-05 21:00:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.983912483912484) internal successors, (6191), 1554 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6191 transitions. [2021-06-05 21:00:14,204 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6191 transitions. Word has length 25 [2021-06-05 21:00:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:14,204 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6191 transitions. [2021-06-05 21:00:14,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6191 transitions. [2021-06-05 21:00:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:14,206 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:14,206 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:14,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-06-05 21:00:14,206 INFO L430 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:14,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1149540005, now seen corresponding path program 555 times [2021-06-05 21:00:14,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:14,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760308675] [2021-06-05 21:00:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:14,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:14,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760308675] [2021-06-05 21:00:14,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760308675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:14,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:14,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:14,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84533296] [2021-06-05 21:00:14,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:14,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:14,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:14,307 INFO L87 Difference]: Start difference. First operand 1555 states and 6191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:14,362 INFO L93 Difference]: Finished difference Result 3194 states and 11923 transitions. [2021-06-05 21:00:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:14,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:14,368 INFO L225 Difference]: With dead ends: 3194 [2021-06-05 21:00:14,368 INFO L226 Difference]: Without dead ends: 2947 [2021-06-05 21:00:14,368 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-06-05 21:00:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1571. [2021-06-05 21:00:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.9738853503184712) internal successors, (6239), 1570 states have internal predecessors, (6239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6239 transitions. [2021-06-05 21:00:14,411 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6239 transitions. Word has length 25 [2021-06-05 21:00:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:14,412 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6239 transitions. [2021-06-05 21:00:14,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6239 transitions. [2021-06-05 21:00:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:14,414 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:14,414 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:14,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-06-05 21:00:14,414 INFO L430 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1179399683, now seen corresponding path program 556 times [2021-06-05 21:00:14,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:14,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892734866] [2021-06-05 21:00:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:14,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:14,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892734866] [2021-06-05 21:00:14,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892734866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:14,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:14,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:14,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350629799] [2021-06-05 21:00:14,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:14,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:14,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:14,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:14,492 INFO L87 Difference]: Start difference. First operand 1571 states and 6239 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:14,573 INFO L93 Difference]: Finished difference Result 3194 states and 11907 transitions. [2021-06-05 21:00:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:14,579 INFO L225 Difference]: With dead ends: 3194 [2021-06-05 21:00:14,580 INFO L226 Difference]: Without dead ends: 2931 [2021-06-05 21:00:14,580 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2021-06-05 21:00:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1555. [2021-06-05 21:00:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9787644787644787) internal successors, (6183), 1554 states have internal predecessors, (6183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6183 transitions. [2021-06-05 21:00:14,617 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6183 transitions. Word has length 25 [2021-06-05 21:00:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:14,617 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6183 transitions. [2021-06-05 21:00:14,617 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) [2021-06-05 21:00:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6183 transitions. [2021-06-05 21:00:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:14,619 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:14,620 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:14,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-06-05 21:00:14,620 INFO L430 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash 755122685, now seen corresponding path program 557 times [2021-06-05 21:00:14,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:14,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286701251] [2021-06-05 21:00:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:14,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:14,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286701251] [2021-06-05 21:00:14,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286701251] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:14,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:14,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:14,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106858811] [2021-06-05 21:00:14,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:14,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:14,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:14,693 INFO L87 Difference]: Start difference. First operand 1555 states and 6183 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:14,747 INFO L93 Difference]: Finished difference Result 3278 states and 12263 transitions. [2021-06-05 21:00:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:14,747 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 [2021-06-05 21:00:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:14,753 INFO L225 Difference]: With dead ends: 3278 [2021-06-05 21:00:14,753 INFO L226 Difference]: Without dead ends: 2995 [2021-06-05 21:00:14,753 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-06-05 21:00:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1583. [2021-06-05 21:00:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.963969658659924) internal successors, (6271), 1582 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6271 transitions. [2021-06-05 21:00:14,793 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6271 transitions. Word has length 25 [2021-06-05 21:00:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:14,793 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6271 transitions. [2021-06-05 21:00:14,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6271 transitions. [2021-06-05 21:00:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:14,795 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:14,795 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:14,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-06-05 21:00:14,796 INFO L430 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:14,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:14,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1288214309, now seen corresponding path program 558 times [2021-06-05 21:00:14,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:14,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908383777] [2021-06-05 21:00:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:14,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:14,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908383777] [2021-06-05 21:00:14,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908383777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:14,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:14,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:14,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705968719] [2021-06-05 21:00:14,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:14,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:14,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:14,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:14,870 INFO L87 Difference]: Start difference. First operand 1583 states and 6271 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:14,926 INFO L93 Difference]: Finished difference Result 3242 states and 12087 transitions. [2021-06-05 21:00:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:14,926 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 [2021-06-05 21:00:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:14,932 INFO L225 Difference]: With dead ends: 3242 [2021-06-05 21:00:14,932 INFO L226 Difference]: Without dead ends: 2959 [2021-06-05 21:00:14,932 INFO L810 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 [2021-06-05 21:00:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2021-06-05 21:00:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1547. [2021-06-05 21:00:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.983829236739974) internal successors, (6159), 1546 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6159 transitions. [2021-06-05 21:00:14,971 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6159 transitions. Word has length 25 [2021-06-05 21:00:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:14,971 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6159 transitions. [2021-06-05 21:00:14,971 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) [2021-06-05 21:00:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6159 transitions. [2021-06-05 21:00:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:14,973 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:14,974 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:14,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-06-05 21:00:14,974 INFO L430 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:14,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1969162715, now seen corresponding path program 559 times [2021-06-05 21:00:14,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:14,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189052113] [2021-06-05 21:00:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:15,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:15,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189052113] [2021-06-05 21:00:15,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189052113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:15,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:15,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:15,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894155568] [2021-06-05 21:00:15,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:15,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:15,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:15,057 INFO L87 Difference]: Start difference. First operand 1547 states and 6159 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:15,102 INFO L93 Difference]: Finished difference Result 3230 states and 12087 transitions. [2021-06-05 21:00:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:15,109 INFO L225 Difference]: With dead ends: 3230 [2021-06-05 21:00:15,109 INFO L226 Difference]: Without dead ends: 2983 [2021-06-05 21:00:15,109 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:15,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-05 21:00:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1547. [2021-06-05 21:00:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.965717981888745) internal successors, (6131), 1546 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6131 transitions. [2021-06-05 21:00:15,149 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6131 transitions. Word has length 25 [2021-06-05 21:00:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:15,149 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6131 transitions. [2021-06-05 21:00:15,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6131 transitions. [2021-06-05 21:00:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:15,152 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:15,152 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:15,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-06-05 21:00:15,152 INFO L430 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1317506597, now seen corresponding path program 560 times [2021-06-05 21:00:15,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:15,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666021624] [2021-06-05 21:00:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:15,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:15,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666021624] [2021-06-05 21:00:15,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666021624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:15,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:15,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:15,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578327779] [2021-06-05 21:00:15,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:15,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:15,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:15,228 INFO L87 Difference]: Start difference. First operand 1547 states and 6131 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:15,285 INFO L93 Difference]: Finished difference Result 3266 states and 12207 transitions. [2021-06-05 21:00:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:15,291 INFO L225 Difference]: With dead ends: 3266 [2021-06-05 21:00:15,291 INFO L226 Difference]: Without dead ends: 2955 [2021-06-05 21:00:15,291 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-05 21:00:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1519. [2021-06-05 21:00:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 3.9729907773386035) internal successors, (6031), 1518 states have internal predecessors, (6031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6031 transitions. [2021-06-05 21:00:15,327 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6031 transitions. Word has length 25 [2021-06-05 21:00:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:15,328 INFO L482 AbstractCegarLoop]: Abstraction has 1519 states and 6031 transitions. [2021-06-05 21:00:15,328 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) [2021-06-05 21:00:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6031 transitions. [2021-06-05 21:00:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:15,329 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:15,330 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:15,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-06-05 21:00:15,330 INFO L430 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1173135835, now seen corresponding path program 561 times [2021-06-05 21:00:15,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:15,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524429564] [2021-06-05 21:00:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:15,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:15,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524429564] [2021-06-05 21:00:15,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524429564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:15,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:15,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:15,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235783096] [2021-06-05 21:00:15,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:15,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:15,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:15,413 INFO L87 Difference]: Start difference. First operand 1519 states and 6031 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:15,456 INFO L93 Difference]: Finished difference Result 3150 states and 11779 transitions. [2021-06-05 21:00:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:15,456 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 [2021-06-05 21:00:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:15,462 INFO L225 Difference]: With dead ends: 3150 [2021-06-05 21:00:15,462 INFO L226 Difference]: Without dead ends: 2903 [2021-06-05 21:00:15,462 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-06-05 21:00:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1543. [2021-06-05 21:00:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 3.9604409857328147) internal successors, (6107), 1542 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6107 transitions. [2021-06-05 21:00:15,500 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6107 transitions. Word has length 25 [2021-06-05 21:00:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:15,500 INFO L482 AbstractCegarLoop]: Abstraction has 1543 states and 6107 transitions. [2021-06-05 21:00:15,500 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) [2021-06-05 21:00:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6107 transitions. [2021-06-05 21:00:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:15,502 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:15,502 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:15,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-06-05 21:00:15,502 INFO L430 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:15,503 INFO L82 PathProgramCache]: Analyzing trace with hash 527604221, now seen corresponding path program 562 times [2021-06-05 21:00:15,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:15,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11194983] [2021-06-05 21:00:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:15,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:15,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11194983] [2021-06-05 21:00:15,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11194983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:15,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:15,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:15,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096630405] [2021-06-05 21:00:15,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:15,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:15,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:15,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:15,579 INFO L87 Difference]: Start difference. First operand 1543 states and 6107 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:15,658 INFO L93 Difference]: Finished difference Result 2974 states and 11202 transitions. [2021-06-05 21:00:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:15,658 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 [2021-06-05 21:00:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:15,665 INFO L225 Difference]: With dead ends: 2974 [2021-06-05 21:00:15,665 INFO L226 Difference]: Without dead ends: 2687 [2021-06-05 21:00:15,665 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-06-05 21:00:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1519. [2021-06-05 21:00:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 3.9650856389986826) internal successors, (6019), 1518 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6019 transitions. [2021-06-05 21:00:15,704 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6019 transitions. Word has length 25 [2021-06-05 21:00:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:15,704 INFO L482 AbstractCegarLoop]: Abstraction has 1519 states and 6019 transitions. [2021-06-05 21:00:15,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6019 transitions. [2021-06-05 21:00:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:15,707 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:15,707 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:15,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-06-05 21:00:15,707 INFO L430 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1789927933, now seen corresponding path program 563 times [2021-06-05 21:00:15,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:15,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243341546] [2021-06-05 21:00:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:15,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:15,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243341546] [2021-06-05 21:00:15,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243341546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:15,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:15,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:15,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967214157] [2021-06-05 21:00:15,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:15,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:15,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:15,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:15,791 INFO L87 Difference]: Start difference. First operand 1519 states and 6019 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:15,851 INFO L93 Difference]: Finished difference Result 3198 states and 11971 transitions. [2021-06-05 21:00:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:15,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:15,857 INFO L225 Difference]: With dead ends: 3198 [2021-06-05 21:00:15,857 INFO L226 Difference]: Without dead ends: 2915 [2021-06-05 21:00:15,857 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-06-05 21:00:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1555. [2021-06-05 21:00:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9504504504504503) internal successors, (6139), 1554 states have internal predecessors, (6139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6139 transitions. [2021-06-05 21:00:15,895 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6139 transitions. Word has length 25 [2021-06-05 21:00:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:15,896 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6139 transitions. [2021-06-05 21:00:15,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6139 transitions. [2021-06-05 21:00:15,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:15,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:15,898 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:15,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-06-05 21:00:15,898 INFO L430 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:15,898 INFO L82 PathProgramCache]: Analyzing trace with hash 397783387, now seen corresponding path program 564 times [2021-06-05 21:00:15,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:15,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624855685] [2021-06-05 21:00:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:15,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:15,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624855685] [2021-06-05 21:00:15,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624855685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:15,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:15,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:15,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82822116] [2021-06-05 21:00:15,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:15,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:15,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:15,984 INFO L87 Difference]: Start difference. First operand 1555 states and 6139 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:16,048 INFO L93 Difference]: Finished difference Result 2986 states and 11234 transitions. [2021-06-05 21:00:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:16,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:16,054 INFO L225 Difference]: With dead ends: 2986 [2021-06-05 21:00:16,054 INFO L226 Difference]: Without dead ends: 2675 [2021-06-05 21:00:16,054 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-06-05 21:00:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 1507. [2021-06-05 21:00:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 3.9727755644090306) internal successors, (5983), 1506 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 5983 transitions. [2021-06-05 21:00:16,090 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 5983 transitions. Word has length 25 [2021-06-05 21:00:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:16,090 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 5983 transitions. [2021-06-05 21:00:16,090 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) [2021-06-05 21:00:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 5983 transitions. [2021-06-05 21:00:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:16,092 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:16,092 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:16,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-06-05 21:00:16,093 INFO L430 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1112414649, now seen corresponding path program 565 times [2021-06-05 21:00:16,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:16,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037449752] [2021-06-05 21:00:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:16,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:16,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037449752] [2021-06-05 21:00:16,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037449752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:16,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:16,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:16,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923910617] [2021-06-05 21:00:16,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:16,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:16,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:16,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:16,166 INFO L87 Difference]: Start difference. First operand 1507 states and 5983 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:16,218 INFO L93 Difference]: Finished difference Result 3050 states and 11355 transitions. [2021-06-05 21:00:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:16,219 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 [2021-06-05 21:00:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:16,224 INFO L225 Difference]: With dead ends: 3050 [2021-06-05 21:00:16,225 INFO L226 Difference]: Without dead ends: 2803 [2021-06-05 21:00:16,225 INFO L810 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 [2021-06-05 21:00:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-06-05 21:00:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1507. [2021-06-05 21:00:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 3.962151394422311) internal successors, (5967), 1506 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 5967 transitions. [2021-06-05 21:00:16,261 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 5967 transitions. Word has length 25 [2021-06-05 21:00:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:16,261 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 5967 transitions. [2021-06-05 21:00:16,261 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) [2021-06-05 21:00:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 5967 transitions. [2021-06-05 21:00:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:16,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:16,263 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:16,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-06-05 21:00:16,264 INFO L430 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1082554971, now seen corresponding path program 566 times [2021-06-05 21:00:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:16,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445407275] [2021-06-05 21:00:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:16,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:16,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445407275] [2021-06-05 21:00:16,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445407275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:16,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:16,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:16,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712463404] [2021-06-05 21:00:16,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:16,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:16,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:16,339 INFO L87 Difference]: Start difference. First operand 1507 states and 5967 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:16,407 INFO L93 Difference]: Finished difference Result 3050 states and 11339 transitions. [2021-06-05 21:00:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:16,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:16,414 INFO L225 Difference]: With dead ends: 3050 [2021-06-05 21:00:16,414 INFO L226 Difference]: Without dead ends: 2787 [2021-06-05 21:00:16,414 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-06-05 21:00:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 1491. [2021-06-05 21:00:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1490 states have (on average 3.9671140939597316) internal successors, (5911), 1490 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 5911 transitions. [2021-06-05 21:00:16,453 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 5911 transitions. Word has length 25 [2021-06-05 21:00:16,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:16,453 INFO L482 AbstractCegarLoop]: Abstraction has 1491 states and 5911 transitions. [2021-06-05 21:00:16,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 5911 transitions. [2021-06-05 21:00:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:16,455 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:16,455 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:16,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-06-05 21:00:16,455 INFO L430 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash 631512603, now seen corresponding path program 567 times [2021-06-05 21:00:16,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:16,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395096835] [2021-06-05 21:00:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:16,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:16,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395096835] [2021-06-05 21:00:16,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395096835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:16,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:16,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:16,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765951741] [2021-06-05 21:00:16,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:16,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:16,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:16,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:16,543 INFO L87 Difference]: Start difference. First operand 1491 states and 5911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:16,593 INFO L93 Difference]: Finished difference Result 2994 states and 11151 transitions. [2021-06-05 21:00:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:16,593 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 [2021-06-05 21:00:16,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:16,599 INFO L225 Difference]: With dead ends: 2994 [2021-06-05 21:00:16,599 INFO L226 Difference]: Without dead ends: 2747 [2021-06-05 21:00:16,599 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-06-05 21:00:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1435. [2021-06-05 21:00:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.9630404463040447) internal successors, (5683), 1434 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 5683 transitions. [2021-06-05 21:00:16,633 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 5683 transitions. Word has length 25 [2021-06-05 21:00:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:16,633 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 5683 transitions. [2021-06-05 21:00:16,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 5683 transitions. [2021-06-05 21:00:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:16,635 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:16,635 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:16,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-06-05 21:00:16,635 INFO L430 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1495457317, now seen corresponding path program 568 times [2021-06-05 21:00:16,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:16,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741378476] [2021-06-05 21:00:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:16,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:16,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741378476] [2021-06-05 21:00:16,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741378476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:16,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:16,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:16,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142129127] [2021-06-05 21:00:16,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:16,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:16,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:16,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:16,707 INFO L87 Difference]: Start difference. First operand 1435 states and 5683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:16,801 INFO L93 Difference]: Finished difference Result 2818 states and 10574 transitions. [2021-06-05 21:00:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:16,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:16,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:16,806 INFO L225 Difference]: With dead ends: 2818 [2021-06-05 21:00:16,806 INFO L226 Difference]: Without dead ends: 2531 [2021-06-05 21:00:16,806 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2021-06-05 21:00:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1411. [2021-06-05 21:00:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.9709219858156026) internal successors, (5599), 1410 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 5599 transitions. [2021-06-05 21:00:16,839 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 5599 transitions. Word has length 25 [2021-06-05 21:00:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:16,839 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 5599 transitions. [2021-06-05 21:00:16,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 5599 transitions. [2021-06-05 21:00:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:16,842 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:16,842 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:16,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-06-05 21:00:16,842 INFO L430 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:16,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:16,842 INFO L82 PathProgramCache]: Analyzing trace with hash -798035459, now seen corresponding path program 569 times [2021-06-05 21:00:16,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:16,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768314732] [2021-06-05 21:00:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:16,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:16,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768314732] [2021-06-05 21:00:16,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768314732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:16,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:16,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:16,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936815863] [2021-06-05 21:00:16,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:16,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:16,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:16,927 INFO L87 Difference]: Start difference. First operand 1411 states and 5599 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:16,989 INFO L93 Difference]: Finished difference Result 2802 states and 10518 transitions. [2021-06-05 21:00:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:16,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:16,995 INFO L225 Difference]: With dead ends: 2802 [2021-06-05 21:00:16,995 INFO L226 Difference]: Without dead ends: 2555 [2021-06-05 21:00:16,995 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-06-05 21:00:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1435. [2021-06-05 21:00:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.9574616457461644) internal successors, (5675), 1434 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 5675 transitions. [2021-06-05 21:00:17,036 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 5675 transitions. Word has length 25 [2021-06-05 21:00:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:17,036 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 5675 transitions. [2021-06-05 21:00:17,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 5675 transitions. [2021-06-05 21:00:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:17,038 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:17,038 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:17,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-06-05 21:00:17,038 INFO L430 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:17,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:17,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1453594843, now seen corresponding path program 570 times [2021-06-05 21:00:17,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:17,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181099694] [2021-06-05 21:00:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:17,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:17,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181099694] [2021-06-05 21:00:17,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181099694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:17,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:17,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:17,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460018305] [2021-06-05 21:00:17,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:17,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:17,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:17,129 INFO L87 Difference]: Start difference. First operand 1435 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:17,188 INFO L93 Difference]: Finished difference Result 2554 states and 9665 transitions. [2021-06-05 21:00:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:17,193 INFO L225 Difference]: With dead ends: 2554 [2021-06-05 21:00:17,193 INFO L226 Difference]: Without dead ends: 2259 [2021-06-05 21:00:17,193 INFO L810 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 [2021-06-05 21:00:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2021-06-05 21:00:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1403. [2021-06-05 21:00:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 3.9764621968616263) internal successors, (5575), 1402 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 5575 transitions. [2021-06-05 21:00:17,223 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 5575 transitions. Word has length 25 [2021-06-05 21:00:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:17,223 INFO L482 AbstractCegarLoop]: Abstraction has 1403 states and 5575 transitions. [2021-06-05 21:00:17,223 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) [2021-06-05 21:00:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 5575 transitions. [2021-06-05 21:00:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:17,225 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:17,225 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:17,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-06-05 21:00:17,225 INFO L430 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash 442075645, now seen corresponding path program 571 times [2021-06-05 21:00:17,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:17,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318243731] [2021-06-05 21:00:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:17,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:17,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318243731] [2021-06-05 21:00:17,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318243731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:17,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:17,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:17,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501495096] [2021-06-05 21:00:17,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:17,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:17,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:17,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:17,300 INFO L87 Difference]: Start difference. First operand 1403 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:17,355 INFO L93 Difference]: Finished difference Result 2902 states and 10946 transitions. [2021-06-05 21:00:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:17,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:17,361 INFO L225 Difference]: With dead ends: 2902 [2021-06-05 21:00:17,361 INFO L226 Difference]: Without dead ends: 2619 [2021-06-05 21:00:17,361 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-06-05 21:00:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1443. [2021-06-05 21:00:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 3.966019417475728) internal successors, (5719), 1442 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 5719 transitions. [2021-06-05 21:00:17,393 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 5719 transitions. Word has length 25 [2021-06-05 21:00:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:17,393 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 5719 transitions. [2021-06-05 21:00:17,393 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) [2021-06-05 21:00:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 5719 transitions. [2021-06-05 21:00:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:17,395 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:17,395 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:17,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-06-05 21:00:17,395 INFO L430 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1601261349, now seen corresponding path program 572 times [2021-06-05 21:00:17,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:17,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520555816] [2021-06-05 21:00:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:17,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:17,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520555816] [2021-06-05 21:00:17,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520555816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:17,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:17,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:17,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900149782] [2021-06-05 21:00:17,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:17,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:17,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:17,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:17,462 INFO L87 Difference]: Start difference. First operand 1443 states and 5719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:17,515 INFO L93 Difference]: Finished difference Result 2866 states and 10770 transitions. [2021-06-05 21:00:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:17,515 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 [2021-06-05 21:00:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:17,520 INFO L225 Difference]: With dead ends: 2866 [2021-06-05 21:00:17,520 INFO L226 Difference]: Without dead ends: 2591 [2021-06-05 21:00:17,521 INFO L810 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 [2021-06-05 21:00:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-06-05 21:00:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1415. [2021-06-05 21:00:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.973833097595474) internal successors, (5619), 1414 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5619 transitions. [2021-06-05 21:00:17,561 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5619 transitions. Word has length 25 [2021-06-05 21:00:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:17,561 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5619 transitions. [2021-06-05 21:00:17,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5619 transitions. [2021-06-05 21:00:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:17,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:17,563 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:17,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-06-05 21:00:17,563 INFO L430 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:17,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:17,563 INFO L82 PathProgramCache]: Analyzing trace with hash -404721317, now seen corresponding path program 573 times [2021-06-05 21:00:17,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:17,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238088099] [2021-06-05 21:00:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:17,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:17,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238088099] [2021-06-05 21:00:17,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238088099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:17,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:17,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:17,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146510587] [2021-06-05 21:00:17,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:17,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:17,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:17,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:17,640 INFO L87 Difference]: Start difference. First operand 1415 states and 5619 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:17,701 INFO L93 Difference]: Finished difference Result 2782 states and 10466 transitions. [2021-06-05 21:00:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:17,706 INFO L225 Difference]: With dead ends: 2782 [2021-06-05 21:00:17,706 INFO L226 Difference]: Without dead ends: 2499 [2021-06-05 21:00:17,706 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-06-05 21:00:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1451. [2021-06-05 21:00:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.9579310344827587) internal successors, (5739), 1450 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5739 transitions. [2021-06-05 21:00:17,740 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5739 transitions. Word has length 25 [2021-06-05 21:00:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:17,740 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5739 transitions. [2021-06-05 21:00:17,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5739 transitions. [2021-06-05 21:00:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:17,742 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:17,742 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:17,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-06-05 21:00:17,742 INFO L430 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 787745115, now seen corresponding path program 574 times [2021-06-05 21:00:17,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:17,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752245589] [2021-06-05 21:00:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:17,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:17,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752245589] [2021-06-05 21:00:17,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752245589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:17,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:17,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:17,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311114267] [2021-06-05 21:00:17,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:17,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:17,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:17,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:17,812 INFO L87 Difference]: Start difference. First operand 1451 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:17,916 INFO L93 Difference]: Finished difference Result 2570 states and 9729 transitions. [2021-06-05 21:00:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:17,916 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 [2021-06-05 21:00:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:17,921 INFO L225 Difference]: With dead ends: 2570 [2021-06-05 21:00:17,921 INFO L226 Difference]: Without dead ends: 2271 [2021-06-05 21:00:17,921 INFO L810 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 [2021-06-05 21:00:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-06-05 21:00:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1415. [2021-06-05 21:00:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.9653465346534653) internal successors, (5607), 1414 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5607 transitions. [2021-06-05 21:00:17,954 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5607 transitions. Word has length 25 [2021-06-05 21:00:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:17,954 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5607 transitions. [2021-06-05 21:00:17,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5607 transitions. [2021-06-05 21:00:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:17,956 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:17,956 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:17,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-06-05 21:00:17,956 INFO L430 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash 577626297, now seen corresponding path program 575 times [2021-06-05 21:00:17,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:17,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151840429] [2021-06-05 21:00:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:18,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:18,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151840429] [2021-06-05 21:00:18,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151840429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:18,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:18,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:18,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68187111] [2021-06-05 21:00:18,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:18,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:18,057 INFO L87 Difference]: Start difference. First operand 1415 states and 5607 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:18,124 INFO L93 Difference]: Finished difference Result 2462 states and 9321 transitions. [2021-06-05 21:00:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:18,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:18,129 INFO L225 Difference]: With dead ends: 2462 [2021-06-05 21:00:18,129 INFO L226 Difference]: Without dead ends: 2215 [2021-06-05 21:00:18,129 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2021-06-05 21:00:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1439. [2021-06-05 21:00:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 3.9520166898470097) internal successors, (5683), 1438 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5683 transitions. [2021-06-05 21:00:18,161 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5683 transitions. Word has length 25 [2021-06-05 21:00:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:18,161 INFO L482 AbstractCegarLoop]: Abstraction has 1439 states and 5683 transitions. [2021-06-05 21:00:18,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5683 transitions. [2021-06-05 21:00:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:18,163 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:18,164 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:18,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-06-05 21:00:18,164 INFO L430 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1658688923, now seen corresponding path program 576 times [2021-06-05 21:00:18,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:18,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120266749] [2021-06-05 21:00:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:18,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:18,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120266749] [2021-06-05 21:00:18,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120266749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:18,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:18,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:18,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709708567] [2021-06-05 21:00:18,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:18,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:18,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:18,247 INFO L87 Difference]: Start difference. First operand 1439 states and 5683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:18,318 INFO L93 Difference]: Finished difference Result 2214 states and 8468 transitions. [2021-06-05 21:00:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:18,322 INFO L225 Difference]: With dead ends: 2214 [2021-06-05 21:00:18,322 INFO L226 Difference]: Without dead ends: 1911 [2021-06-05 21:00:18,322 INFO L810 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 [2021-06-05 21:00:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-06-05 21:00:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1399. [2021-06-05 21:00:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.98068669527897) internal successors, (5565), 1398 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 5565 transitions. [2021-06-05 21:00:18,350 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 5565 transitions. Word has length 25 [2021-06-05 21:00:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:18,350 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 5565 transitions. [2021-06-05 21:00:18,350 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) [2021-06-05 21:00:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 5565 transitions. [2021-06-05 21:00:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:18,352 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:18,352 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:18,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-06-05 21:00:18,352 INFO L430 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash 112877023, now seen corresponding path program 577 times [2021-06-05 21:00:18,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:18,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134229501] [2021-06-05 21:00:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:18,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:18,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134229501] [2021-06-05 21:00:18,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134229501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:18,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:18,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:18,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711480240] [2021-06-05 21:00:18,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:18,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:18,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:18,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:18,423 INFO L87 Difference]: Start difference. First operand 1399 states and 5565 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:18,483 INFO L93 Difference]: Finished difference Result 3066 states and 11656 transitions. [2021-06-05 21:00:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:18,488 INFO L225 Difference]: With dead ends: 3066 [2021-06-05 21:00:18,489 INFO L226 Difference]: Without dead ends: 2781 [2021-06-05 21:00:18,489 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-06-05 21:00:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 1465. [2021-06-05 21:00:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.971311475409836) internal successors, (5814), 1464 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 5814 transitions. [2021-06-05 21:00:18,525 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 5814 transitions. Word has length 25 [2021-06-05 21:00:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:18,525 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 5814 transitions. [2021-06-05 21:00:18,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 5814 transitions. [2021-06-05 21:00:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:18,527 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:18,527 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:18,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-06-05 21:00:18,527 INFO L430 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1930459971, now seen corresponding path program 578 times [2021-06-05 21:00:18,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:18,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239060952] [2021-06-05 21:00:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:18,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:18,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239060952] [2021-06-05 21:00:18,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239060952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:18,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:18,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:18,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22124560] [2021-06-05 21:00:18,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:18,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:18,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:18,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:18,610 INFO L87 Difference]: Start difference. First operand 1465 states and 5814 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:18,665 INFO L93 Difference]: Finished difference Result 3064 states and 11605 transitions. [2021-06-05 21:00:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:18,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:18,670 INFO L225 Difference]: With dead ends: 3064 [2021-06-05 21:00:18,670 INFO L226 Difference]: Without dead ends: 2735 [2021-06-05 21:00:18,670 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-05 21:00:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1419. [2021-06-05 21:00:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.9823695345557124) internal successors, (5647), 1418 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5647 transitions. [2021-06-05 21:00:18,705 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5647 transitions. Word has length 25 [2021-06-05 21:00:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:18,705 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5647 transitions. [2021-06-05 21:00:18,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5647 transitions. [2021-06-05 21:00:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:18,707 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:18,707 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:18,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-06-05 21:00:18,707 INFO L430 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash -733919939, now seen corresponding path program 579 times [2021-06-05 21:00:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:18,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537509279] [2021-06-05 21:00:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:18,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:18,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537509279] [2021-06-05 21:00:18,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537509279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:18,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:18,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:18,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861793019] [2021-06-05 21:00:18,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:18,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:18,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:18,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:18,779 INFO L87 Difference]: Start difference. First operand 1419 states and 5647 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:18,833 INFO L93 Difference]: Finished difference Result 3012 states and 11411 transitions. [2021-06-05 21:00:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:18,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:18,839 INFO L225 Difference]: With dead ends: 3012 [2021-06-05 21:00:18,839 INFO L226 Difference]: Without dead ends: 2727 [2021-06-05 21:00:18,839 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-06-05 21:00:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 1447. [2021-06-05 21:00:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1446 states have (on average 3.9661134163208853) internal successors, (5735), 1446 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 5735 transitions. [2021-06-05 21:00:18,872 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 5735 transitions. Word has length 25 [2021-06-05 21:00:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:18,873 INFO L482 AbstractCegarLoop]: Abstraction has 1447 states and 5735 transitions. [2021-06-05 21:00:18,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 5735 transitions. [2021-06-05 21:00:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:18,874 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:18,874 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:18,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-06-05 21:00:18,875 INFO L430 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash 458546493, now seen corresponding path program 580 times [2021-06-05 21:00:18,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:18,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063742331] [2021-06-05 21:00:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:18,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:18,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063742331] [2021-06-05 21:00:18,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063742331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:18,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:18,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:18,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643036339] [2021-06-05 21:00:18,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:18,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:18,945 INFO L87 Difference]: Start difference. First operand 1447 states and 5735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:19,003 INFO L93 Difference]: Finished difference Result 2974 states and 11230 transitions. [2021-06-05 21:00:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:19,009 INFO L225 Difference]: With dead ends: 2974 [2021-06-05 21:00:19,009 INFO L226 Difference]: Without dead ends: 2699 [2021-06-05 21:00:19,009 INFO L810 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 [2021-06-05 21:00:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-06-05 21:00:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 1419. [2021-06-05 21:00:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.972496473906911) internal successors, (5633), 1418 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5633 transitions. [2021-06-05 21:00:19,041 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5633 transitions. Word has length 25 [2021-06-05 21:00:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:19,041 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5633 transitions. [2021-06-05 21:00:19,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5633 transitions. [2021-06-05 21:00:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:19,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:19,043 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:19,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-06-05 21:00:19,043 INFO L430 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash 248427675, now seen corresponding path program 581 times [2021-06-05 21:00:19,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:19,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207460071] [2021-06-05 21:00:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:19,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:19,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207460071] [2021-06-05 21:00:19,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207460071] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:19,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:19,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:19,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690958831] [2021-06-05 21:00:19,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:19,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:19,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:19,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:19,111 INFO L87 Difference]: Start difference. First operand 1419 states and 5633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:19,164 INFO L93 Difference]: Finished difference Result 3008 states and 11387 transitions. [2021-06-05 21:00:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:19,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:19,170 INFO L225 Difference]: With dead ends: 3008 [2021-06-05 21:00:19,170 INFO L226 Difference]: Without dead ends: 2725 [2021-06-05 21:00:19,170 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-06-05 21:00:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1447. [2021-06-05 21:00:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1446 states have (on average 3.9564315352697097) internal successors, (5721), 1446 states have internal predecessors, (5721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 5721 transitions. [2021-06-05 21:00:19,204 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 5721 transitions. Word has length 25 [2021-06-05 21:00:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:19,204 INFO L482 AbstractCegarLoop]: Abstraction has 1447 states and 5721 transitions. [2021-06-05 21:00:19,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 5721 transitions. [2021-06-05 21:00:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:19,206 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:19,206 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:19,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-06-05 21:00:19,206 INFO L430 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:19,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1329490301, now seen corresponding path program 582 times [2021-06-05 21:00:19,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:19,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335031193] [2021-06-05 21:00:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:19,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:19,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335031193] [2021-06-05 21:00:19,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335031193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:19,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:19,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:19,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338246254] [2021-06-05 21:00:19,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:19,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:19,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:19,276 INFO L87 Difference]: Start difference. First operand 1447 states and 5721 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:19,333 INFO L93 Difference]: Finished difference Result 2972 states and 11211 transitions. [2021-06-05 21:00:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:19,338 INFO L225 Difference]: With dead ends: 2972 [2021-06-05 21:00:19,339 INFO L226 Difference]: Without dead ends: 2683 [2021-06-05 21:00:19,339 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-06-05 21:00:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 1405. [2021-06-05 21:00:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.9814814814814814) internal successors, (5590), 1404 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 5590 transitions. [2021-06-05 21:00:19,372 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 5590 transitions. Word has length 25 [2021-06-05 21:00:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:19,372 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 5590 transitions. [2021-06-05 21:00:19,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 5590 transitions. [2021-06-05 21:00:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:19,374 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:19,374 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:19,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-06-05 21:00:19,374 INFO L430 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:19,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:19,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1910184515, now seen corresponding path program 583 times [2021-06-05 21:00:19,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:19,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929689625] [2021-06-05 21:00:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:19,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:19,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929689625] [2021-06-05 21:00:19,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929689625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:19,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:19,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:19,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126115521] [2021-06-05 21:00:19,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:19,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:19,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:19,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:19,443 INFO L87 Difference]: Start difference. First operand 1405 states and 5590 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:19,500 INFO L93 Difference]: Finished difference Result 3006 states and 11386 transitions. [2021-06-05 21:00:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:19,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:19,506 INFO L225 Difference]: With dead ends: 3006 [2021-06-05 21:00:19,506 INFO L226 Difference]: Without dead ends: 2721 [2021-06-05 21:00:19,506 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2021-06-05 21:00:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1469. [2021-06-05 21:00:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.9713896457765667) internal successors, (5830), 1468 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 5830 transitions. [2021-06-05 21:00:19,540 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 5830 transitions. Word has length 25 [2021-06-05 21:00:19,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:19,540 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 5830 transitions. [2021-06-05 21:00:19,540 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) [2021-06-05 21:00:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 5830 transitions. [2021-06-05 21:00:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:19,542 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:19,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:19,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-06-05 21:00:19,542 INFO L430 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash 341445787, now seen corresponding path program 584 times [2021-06-05 21:00:19,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:19,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661957013] [2021-06-05 21:00:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:19,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:19,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661957013] [2021-06-05 21:00:19,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661957013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:19,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:19,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:19,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110507903] [2021-06-05 21:00:19,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:19,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:19,612 INFO L87 Difference]: Start difference. First operand 1469 states and 5830 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:19,666 INFO L93 Difference]: Finished difference Result 3004 states and 11335 transitions. [2021-06-05 21:00:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:19,666 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 [2021-06-05 21:00:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:19,672 INFO L225 Difference]: With dead ends: 3004 [2021-06-05 21:00:19,672 INFO L226 Difference]: Without dead ends: 2675 [2021-06-05 21:00:19,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-06-05 21:00:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 1423. [2021-06-05 21:00:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 3.979606188466948) internal successors, (5659), 1422 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 5659 transitions. [2021-06-05 21:00:19,705 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 5659 transitions. Word has length 25 [2021-06-05 21:00:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:19,705 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 5659 transitions. [2021-06-05 21:00:19,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 5659 transitions. [2021-06-05 21:00:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:19,707 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:19,707 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:19,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-06-05 21:00:19,707 INFO L430 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1588755901, now seen corresponding path program 585 times [2021-06-05 21:00:19,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:19,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439860689] [2021-06-05 21:00:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:19,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:19,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439860689] [2021-06-05 21:00:19,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439860689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:19,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:19,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:19,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369051898] [2021-06-05 21:00:19,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:19,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:19,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:19,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:19,810 INFO L87 Difference]: Start difference. First operand 1423 states and 5659 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:19,872 INFO L93 Difference]: Finished difference Result 2882 states and 10892 transitions. [2021-06-05 21:00:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:19,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:19,878 INFO L225 Difference]: With dead ends: 2882 [2021-06-05 21:00:19,878 INFO L226 Difference]: Without dead ends: 2597 [2021-06-05 21:00:19,878 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-06-05 21:00:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1459. [2021-06-05 21:00:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 3.9636488340192044) internal successors, (5779), 1458 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 5779 transitions. [2021-06-05 21:00:19,919 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 5779 transitions. Word has length 25 [2021-06-05 21:00:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:19,919 INFO L482 AbstractCegarLoop]: Abstraction has 1459 states and 5779 transitions. [2021-06-05 21:00:19,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 5779 transitions. [2021-06-05 21:00:19,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:19,921 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:19,921 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:19,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-06-05 21:00:19,921 INFO L430 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:19,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2144544189, now seen corresponding path program 586 times [2021-06-05 21:00:19,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:19,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770660924] [2021-06-05 21:00:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:19,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:19,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770660924] [2021-06-05 21:00:19,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770660924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:19,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:19,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:19,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457905383] [2021-06-05 21:00:19,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:19,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:19,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:19,990 INFO L87 Difference]: Start difference. First operand 1459 states and 5779 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:20,046 INFO L93 Difference]: Finished difference Result 2668 states and 10150 transitions. [2021-06-05 21:00:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:20,052 INFO L225 Difference]: With dead ends: 2668 [2021-06-05 21:00:20,052 INFO L226 Difference]: Without dead ends: 2369 [2021-06-05 21:00:20,052 INFO L810 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 [2021-06-05 21:00:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-06-05 21:00:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1423. [2021-06-05 21:00:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 3.966947960618847) internal successors, (5641), 1422 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 5641 transitions. [2021-06-05 21:00:20,084 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 5641 transitions. Word has length 25 [2021-06-05 21:00:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:20,085 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 5641 transitions. [2021-06-05 21:00:20,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 5641 transitions. [2021-06-05 21:00:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:20,087 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:20,087 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:20,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-06-05 21:00:20,087 INFO L430 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:20,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1723863781, now seen corresponding path program 587 times [2021-06-05 21:00:20,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:20,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044043796] [2021-06-05 21:00:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:20,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:20,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044043796] [2021-06-05 21:00:20,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044043796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:20,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:20,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:20,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670238936] [2021-06-05 21:00:20,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:20,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:20,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:20,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:20,149 INFO L87 Difference]: Start difference. First operand 1423 states and 5641 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:20,216 INFO L93 Difference]: Finished difference Result 2880 states and 10869 transitions. [2021-06-05 21:00:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:20,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:20,222 INFO L225 Difference]: With dead ends: 2880 [2021-06-05 21:00:20,222 INFO L226 Difference]: Without dead ends: 2597 [2021-06-05 21:00:20,222 INFO L810 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 [2021-06-05 21:00:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-06-05 21:00:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1459. [2021-06-05 21:00:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 3.9513031550068587) internal successors, (5761), 1458 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 5761 transitions. [2021-06-05 21:00:20,255 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 5761 transitions. Word has length 25 [2021-06-05 21:00:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:20,255 INFO L482 AbstractCegarLoop]: Abstraction has 1459 states and 5761 transitions. [2021-06-05 21:00:20,255 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) [2021-06-05 21:00:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 5761 transitions. [2021-06-05 21:00:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:20,257 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:20,257 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:20,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-06-05 21:00:20,257 INFO L430 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1930671747, now seen corresponding path program 588 times [2021-06-05 21:00:20,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:20,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342528793] [2021-06-05 21:00:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:20,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:20,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342528793] [2021-06-05 21:00:20,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342528793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:20,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:20,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:20,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269550019] [2021-06-05 21:00:20,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:20,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:20,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:20,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:20,334 INFO L87 Difference]: Start difference. First operand 1459 states and 5761 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:20,404 INFO L93 Difference]: Finished difference Result 2668 states and 10132 transitions. [2021-06-05 21:00:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:20,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:20,409 INFO L225 Difference]: With dead ends: 2668 [2021-06-05 21:00:20,409 INFO L226 Difference]: Without dead ends: 2351 [2021-06-05 21:00:20,409 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-06-05 21:00:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1405. [2021-06-05 21:00:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.977207977207977) internal successors, (5584), 1404 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 5584 transitions. [2021-06-05 21:00:20,444 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 5584 transitions. Word has length 25 [2021-06-05 21:00:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:20,444 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 5584 transitions. [2021-06-05 21:00:20,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 5584 transitions. [2021-06-05 21:00:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:20,446 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:20,446 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:20,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-06-05 21:00:20,447 INFO L430 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1528034715, now seen corresponding path program 589 times [2021-06-05 21:00:20,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:20,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818978862] [2021-06-05 21:00:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:20,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:20,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818978862] [2021-06-05 21:00:20,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818978862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:20,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:20,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:20,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633619037] [2021-06-05 21:00:20,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:20,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:20,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:20,519 INFO L87 Difference]: Start difference. First operand 1405 states and 5584 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:20,580 INFO L93 Difference]: Finished difference Result 2812 states and 10589 transitions. [2021-06-05 21:00:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:20,585 INFO L225 Difference]: With dead ends: 2812 [2021-06-05 21:00:20,585 INFO L226 Difference]: Without dead ends: 2527 [2021-06-05 21:00:20,586 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2021-06-05 21:00:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1445. [2021-06-05 21:00:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.966759002770083) internal successors, (5728), 1444 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5728 transitions. [2021-06-05 21:00:20,617 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5728 transitions. Word has length 25 [2021-06-05 21:00:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:20,617 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5728 transitions. [2021-06-05 21:00:20,617 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) [2021-06-05 21:00:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5728 transitions. [2021-06-05 21:00:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:20,619 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:20,619 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:20,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-06-05 21:00:20,619 INFO L430 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:20,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:20,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1574466149, now seen corresponding path program 590 times [2021-06-05 21:00:20,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:20,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042449305] [2021-06-05 21:00:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:20,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:20,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042449305] [2021-06-05 21:00:20,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042449305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:20,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:20,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:20,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127469699] [2021-06-05 21:00:20,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:20,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:20,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:20,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:20,686 INFO L87 Difference]: Start difference. First operand 1445 states and 5728 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:20,752 INFO L93 Difference]: Finished difference Result 2774 states and 10408 transitions. [2021-06-05 21:00:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:20,752 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 [2021-06-05 21:00:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:20,757 INFO L225 Difference]: With dead ends: 2774 [2021-06-05 21:00:20,757 INFO L226 Difference]: Without dead ends: 2499 [2021-06-05 21:00:20,757 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-06-05 21:00:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1417. [2021-06-05 21:00:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.9745762711864407) internal successors, (5628), 1416 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5628 transitions. [2021-06-05 21:00:20,789 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5628 transitions. Word has length 25 [2021-06-05 21:00:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:20,789 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5628 transitions. [2021-06-05 21:00:20,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5628 transitions. [2021-06-05 21:00:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:20,791 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:20,791 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:20,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-06-05 21:00:20,791 INFO L430 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1047132669, now seen corresponding path program 591 times [2021-06-05 21:00:20,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:20,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897148586] [2021-06-05 21:00:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:20,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:20,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897148586] [2021-06-05 21:00:20,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897148586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:20,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:20,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:20,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110203003] [2021-06-05 21:00:20,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:20,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:20,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:20,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:20,872 INFO L87 Difference]: Start difference. First operand 1417 states and 5628 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:20,927 INFO L93 Difference]: Finished difference Result 2706 states and 10176 transitions. [2021-06-05 21:00:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:20,927 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 [2021-06-05 21:00:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:20,931 INFO L225 Difference]: With dead ends: 2706 [2021-06-05 21:00:20,932 INFO L226 Difference]: Without dead ends: 2421 [2021-06-05 21:00:20,932 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-06-05 21:00:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1453. [2021-06-05 21:00:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 3.958677685950413) internal successors, (5748), 1452 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 5748 transitions. [2021-06-05 21:00:20,962 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 5748 transitions. Word has length 25 [2021-06-05 21:00:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:20,962 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 5748 transitions. [2021-06-05 21:00:20,962 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) [2021-06-05 21:00:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 5748 transitions. [2021-06-05 21:00:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:20,964 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:20,964 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:20,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-06-05 21:00:20,964 INFO L430 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash 121482651, now seen corresponding path program 592 times [2021-06-05 21:00:20,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:20,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234864153] [2021-06-05 21:00:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:21,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:21,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234864153] [2021-06-05 21:00:21,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234864153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:21,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:21,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:21,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085625021] [2021-06-05 21:00:21,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:21,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:21,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:21,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:21,059 INFO L87 Difference]: Start difference. First operand 1453 states and 5748 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:21,127 INFO L93 Difference]: Finished difference Result 2492 states and 9434 transitions. [2021-06-05 21:00:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:21,128 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 [2021-06-05 21:00:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:21,132 INFO L225 Difference]: With dead ends: 2492 [2021-06-05 21:00:21,132 INFO L226 Difference]: Without dead ends: 2193 [2021-06-05 21:00:21,132 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-06-05 21:00:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1417. [2021-06-05 21:00:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.9661016949152543) internal successors, (5616), 1416 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5616 transitions. [2021-06-05 21:00:21,162 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5616 transitions. Word has length 25 [2021-06-05 21:00:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:21,162 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5616 transitions. [2021-06-05 21:00:21,162 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) [2021-06-05 21:00:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5616 transitions. [2021-06-05 21:00:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:21,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:21,164 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:21,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-06-05 21:00:21,164 INFO L430 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash -37866085, now seen corresponding path program 593 times [2021-06-05 21:00:21,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:21,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201984239] [2021-06-05 21:00:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:21,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:21,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201984239] [2021-06-05 21:00:21,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201984239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:21,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:21,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:21,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483701907] [2021-06-05 21:00:21,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:21,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:21,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:21,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:21,230 INFO L87 Difference]: Start difference. First operand 1417 states and 5616 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:21,289 INFO L93 Difference]: Finished difference Result 2464 states and 9330 transitions. [2021-06-05 21:00:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:21,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:21,294 INFO L225 Difference]: With dead ends: 2464 [2021-06-05 21:00:21,294 INFO L226 Difference]: Without dead ends: 2217 [2021-06-05 21:00:21,294 INFO L810 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 [2021-06-05 21:00:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2021-06-05 21:00:21,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1441. [2021-06-05 21:00:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 3.952777777777778) internal successors, (5692), 1440 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 5692 transitions. [2021-06-05 21:00:21,324 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 5692 transitions. Word has length 25 [2021-06-05 21:00:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:21,324 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 5692 transitions. [2021-06-05 21:00:21,324 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) [2021-06-05 21:00:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 5692 transitions. [2021-06-05 21:00:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:21,326 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:21,326 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:21,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-06-05 21:00:21,326 INFO L430 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:21,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1043196541, now seen corresponding path program 594 times [2021-06-05 21:00:21,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:21,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497736044] [2021-06-05 21:00:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:21,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:21,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497736044] [2021-06-05 21:00:21,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497736044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:21,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:21,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:21,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051395569] [2021-06-05 21:00:21,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:21,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:21,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:21,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:21,397 INFO L87 Difference]: Start difference. First operand 1441 states and 5692 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:21,459 INFO L93 Difference]: Finished difference Result 2216 states and 8477 transitions. [2021-06-05 21:00:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:21,459 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 [2021-06-05 21:00:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:21,463 INFO L225 Difference]: With dead ends: 2216 [2021-06-05 21:00:21,463 INFO L226 Difference]: Without dead ends: 1917 [2021-06-05 21:00:21,463 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-06-05 21:00:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1405. [2021-06-05 21:00:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.972934472934473) internal successors, (5578), 1404 states have internal predecessors, (5578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 5578 transitions. [2021-06-05 21:00:21,491 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 5578 transitions. Word has length 25 [2021-06-05 21:00:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:21,491 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 5578 transitions. [2021-06-05 21:00:21,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 5578 transitions. [2021-06-05 21:00:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:21,493 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:21,493 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:21,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-06-05 21:00:21,493 INFO L430 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:21,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1794536071, now seen corresponding path program 595 times [2021-06-05 21:00:21,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:21,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547204920] [2021-06-05 21:00:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:21,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:21,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547204920] [2021-06-05 21:00:21,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547204920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:21,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:21,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:21,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728800738] [2021-06-05 21:00:21,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:21,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:21,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:21,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:21,560 INFO L87 Difference]: Start difference. First operand 1405 states and 5578 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:21,615 INFO L93 Difference]: Finished difference Result 2392 states and 9064 transitions. [2021-06-05 21:00:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:21,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:21,619 INFO L225 Difference]: With dead ends: 2392 [2021-06-05 21:00:21,619 INFO L226 Difference]: Without dead ends: 2109 [2021-06-05 21:00:21,619 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-06-05 21:00:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1445. [2021-06-05 21:00:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.9626038781163433) internal successors, (5722), 1444 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5722 transitions. [2021-06-05 21:00:21,648 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5722 transitions. Word has length 25 [2021-06-05 21:00:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:21,648 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5722 transitions. [2021-06-05 21:00:21,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5722 transitions. [2021-06-05 21:00:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:21,650 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:21,650 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:21,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-06-05 21:00:21,650 INFO L430 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:21,650 INFO L82 PathProgramCache]: Analyzing trace with hash -713473445, now seen corresponding path program 596 times [2021-06-05 21:00:21,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:21,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579400723] [2021-06-05 21:00:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:21,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:21,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579400723] [2021-06-05 21:00:21,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579400723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:21,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:21,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:21,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070615074] [2021-06-05 21:00:21,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:21,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:21,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:21,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:21,719 INFO L87 Difference]: Start difference. First operand 1445 states and 5722 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:21,773 INFO L93 Difference]: Finished difference Result 2356 states and 8888 transitions. [2021-06-05 21:00:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:21,777 INFO L225 Difference]: With dead ends: 2356 [2021-06-05 21:00:21,777 INFO L226 Difference]: Without dead ends: 2081 [2021-06-05 21:00:21,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2021-06-05 21:00:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1417. [2021-06-05 21:00:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.9703389830508473) internal successors, (5622), 1416 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5622 transitions. [2021-06-05 21:00:21,805 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5622 transitions. Word has length 25 [2021-06-05 21:00:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:21,806 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5622 transitions. [2021-06-05 21:00:21,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5622 transitions. [2021-06-05 21:00:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:21,807 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:21,808 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:21,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-06-05 21:00:21,808 INFO L430 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:21,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2019529179, now seen corresponding path program 597 times [2021-06-05 21:00:21,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:21,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708117386] [2021-06-05 21:00:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:21,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:21,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708117386] [2021-06-05 21:00:21,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708117386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:21,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:21,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:21,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930684248] [2021-06-05 21:00:21,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:21,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:21,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:21,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:21,881 INFO L87 Difference]: Start difference. First operand 1417 states and 5622 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:21,941 INFO L93 Difference]: Finished difference Result 2272 states and 8584 transitions. [2021-06-05 21:00:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:21,945 INFO L225 Difference]: With dead ends: 2272 [2021-06-05 21:00:21,945 INFO L226 Difference]: Without dead ends: 1989 [2021-06-05 21:00:21,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2021-06-05 21:00:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1453. [2021-06-05 21:00:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 3.9545454545454546) internal successors, (5742), 1452 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 5742 transitions. [2021-06-05 21:00:21,973 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 5742 transitions. Word has length 25 [2021-06-05 21:00:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:21,973 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 5742 transitions. [2021-06-05 21:00:21,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 5742 transitions. [2021-06-05 21:00:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:21,975 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:21,975 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:21,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-06-05 21:00:21,975 INFO L430 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:21,976 INFO L82 PathProgramCache]: Analyzing trace with hash 331282907, now seen corresponding path program 598 times [2021-06-05 21:00:21,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:21,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686525938] [2021-06-05 21:00:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686525938] [2021-06-05 21:00:22,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686525938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194307430] [2021-06-05 21:00:22,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,053 INFO L87 Difference]: Start difference. First operand 1453 states and 5742 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:22,107 INFO L93 Difference]: Finished difference Result 2060 states and 7847 transitions. [2021-06-05 21:00:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:22,111 INFO L225 Difference]: With dead ends: 2060 [2021-06-05 21:00:22,111 INFO L226 Difference]: Without dead ends: 1761 [2021-06-05 21:00:22,111 INFO L810 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 [2021-06-05 21:00:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2021-06-05 21:00:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1417. [2021-06-05 21:00:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.961864406779661) internal successors, (5610), 1416 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5610 transitions. [2021-06-05 21:00:22,137 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5610 transitions. Word has length 25 [2021-06-05 21:00:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:22,138 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5610 transitions. [2021-06-05 21:00:22,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5610 transitions. [2021-06-05 21:00:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:22,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:22,139 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:22,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-06-05 21:00:22,139 INFO L430 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1887433155, now seen corresponding path program 599 times [2021-06-05 21:00:22,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:22,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543384145] [2021-06-05 21:00:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543384145] [2021-06-05 21:00:22,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543384145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350325998] [2021-06-05 21:00:22,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,205 INFO L87 Difference]: Start difference. First operand 1417 states and 5610 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:22,251 INFO L93 Difference]: Finished difference Result 1952 states and 7439 transitions. [2021-06-05 21:00:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:22,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:22,255 INFO L225 Difference]: With dead ends: 1952 [2021-06-05 21:00:22,255 INFO L226 Difference]: Without dead ends: 1705 [2021-06-05 21:00:22,255 INFO L810 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 [2021-06-05 21:00:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-06-05 21:00:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1441. [2021-06-05 21:00:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 3.948611111111111) internal successors, (5686), 1440 states have internal predecessors, (5686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 5686 transitions. [2021-06-05 21:00:22,281 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 5686 transitions. Word has length 25 [2021-06-05 21:00:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:22,281 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 5686 transitions. [2021-06-05 21:00:22,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 5686 transitions. [2021-06-05 21:00:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:22,283 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:22,283 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:22,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-06-05 21:00:22,283 INFO L430 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:22,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1560737179, now seen corresponding path program 600 times [2021-06-05 21:00:22,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:22,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000951394] [2021-06-05 21:00:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000951394] [2021-06-05 21:00:22,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000951394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117466455] [2021-06-05 21:00:22,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,349 INFO L87 Difference]: Start difference. First operand 1441 states and 5686 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:22,394 INFO L93 Difference]: Finished difference Result 1704 states and 6586 transitions. [2021-06-05 21:00:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:22,397 INFO L225 Difference]: With dead ends: 1704 [2021-06-05 21:00:22,397 INFO L226 Difference]: Without dead ends: 1397 [2021-06-05 21:00:22,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2021-06-05 21:00:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1397. [2021-06-05 21:00:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9835243553008595) internal successors, (5561), 1396 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5561 transitions. [2021-06-05 21:00:22,422 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5561 transitions. Word has length 25 [2021-06-05 21:00:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:22,422 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5561 transitions. [2021-06-05 21:00:22,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5561 transitions. [2021-06-05 21:00:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:22,423 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:22,423 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:22,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-06-05 21:00:22,424 INFO L430 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1731112383, now seen corresponding path program 601 times [2021-06-05 21:00:22,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:22,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806785811] [2021-06-05 21:00:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806785811] [2021-06-05 21:00:22,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806785811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147797695] [2021-06-05 21:00:22,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,491 INFO L87 Difference]: Start difference. First operand 1397 states and 5561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:22,546 INFO L93 Difference]: Finished difference Result 2848 states and 10734 transitions. [2021-06-05 21:00:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:22,546 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 [2021-06-05 21:00:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:22,551 INFO L225 Difference]: With dead ends: 2848 [2021-06-05 21:00:22,551 INFO L226 Difference]: Without dead ends: 2563 [2021-06-05 21:00:22,551 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2021-06-05 21:00:22,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 1457. [2021-06-05 21:00:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1456 states have (on average 3.9690934065934065) internal successors, (5779), 1456 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 5779 transitions. [2021-06-05 21:00:22,583 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 5779 transitions. Word has length 25 [2021-06-05 21:00:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:22,584 INFO L482 AbstractCegarLoop]: Abstraction has 1457 states and 5779 transitions. [2021-06-05 21:00:22,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 5779 transitions. [2021-06-05 21:00:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:22,586 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:22,586 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:22,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-06-05 21:00:22,586 INFO L430 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash 520517919, now seen corresponding path program 602 times [2021-06-05 21:00:22,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:22,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501291902] [2021-06-05 21:00:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501291902] [2021-06-05 21:00:22,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501291902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299772531] [2021-06-05 21:00:22,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,655 INFO L87 Difference]: Start difference. First operand 1457 states and 5779 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:22,718 INFO L93 Difference]: Finished difference Result 2846 states and 10683 transitions. [2021-06-05 21:00:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:22,718 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 [2021-06-05 21:00:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:22,723 INFO L225 Difference]: With dead ends: 2846 [2021-06-05 21:00:22,723 INFO L226 Difference]: Without dead ends: 2517 [2021-06-05 21:00:22,723 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2021-06-05 21:00:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 1411. [2021-06-05 21:00:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.9801418439716314) internal successors, (5612), 1410 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 5612 transitions. [2021-06-05 21:00:22,753 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 5612 transitions. Word has length 25 [2021-06-05 21:00:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:22,753 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 5612 transitions. [2021-06-05 21:00:22,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 5612 transitions. [2021-06-05 21:00:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:22,755 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:22,755 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:22,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-06-05 21:00:22,755 INFO L430 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:22,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:22,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1717057951, now seen corresponding path program 603 times [2021-06-05 21:00:22,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:22,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302374753] [2021-06-05 21:00:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302374753] [2021-06-05 21:00:22,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302374753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838180484] [2021-06-05 21:00:22,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,821 INFO L87 Difference]: Start difference. First operand 1411 states and 5612 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:22,873 INFO L93 Difference]: Finished difference Result 2794 states and 10489 transitions. [2021-06-05 21:00:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:22,878 INFO L225 Difference]: With dead ends: 2794 [2021-06-05 21:00:22,878 INFO L226 Difference]: Without dead ends: 2509 [2021-06-05 21:00:22,878 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2021-06-05 21:00:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1439. [2021-06-05 21:00:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 3.963838664812239) internal successors, (5700), 1438 states have internal predecessors, (5700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5700 transitions. [2021-06-05 21:00:22,908 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5700 transitions. Word has length 25 [2021-06-05 21:00:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:22,909 INFO L482 AbstractCegarLoop]: Abstraction has 1439 states and 5700 transitions. [2021-06-05 21:00:22,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5700 transitions. [2021-06-05 21:00:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:22,910 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:22,910 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:22,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-06-05 21:00:22,911 INFO L430 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:22,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1385442913, now seen corresponding path program 604 times [2021-06-05 21:00:22,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:22,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768810072] [2021-06-05 21:00:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:22,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:22,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768810072] [2021-06-05 21:00:22,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768810072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:22,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:22,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:22,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976615516] [2021-06-05 21:00:22,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:22,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:22,988 INFO L87 Difference]: Start difference. First operand 1439 states and 5700 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:23,038 INFO L93 Difference]: Finished difference Result 2756 states and 10308 transitions. [2021-06-05 21:00:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:23,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:23,047 INFO L225 Difference]: With dead ends: 2756 [2021-06-05 21:00:23,047 INFO L226 Difference]: Without dead ends: 2481 [2021-06-05 21:00:23,048 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-06-05 21:00:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 1411. [2021-06-05 21:00:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.970212765957447) internal successors, (5598), 1410 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 5598 transitions. [2021-06-05 21:00:23,078 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 5598 transitions. Word has length 25 [2021-06-05 21:00:23,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:23,078 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 5598 transitions. [2021-06-05 21:00:23,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 5598 transitions. [2021-06-05 21:00:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:23,080 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:23,080 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:23,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-06-05 21:00:23,080 INFO L430 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1595561731, now seen corresponding path program 605 times [2021-06-05 21:00:23,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:23,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312593527] [2021-06-05 21:00:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:23,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:23,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312593527] [2021-06-05 21:00:23,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312593527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:23,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:23,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:23,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016001214] [2021-06-05 21:00:23,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:23,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:23,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:23,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:23,149 INFO L87 Difference]: Start difference. First operand 1411 states and 5598 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:23,204 INFO L93 Difference]: Finished difference Result 2790 states and 10465 transitions. [2021-06-05 21:00:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:23,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:23,209 INFO L225 Difference]: With dead ends: 2790 [2021-06-05 21:00:23,209 INFO L226 Difference]: Without dead ends: 2507 [2021-06-05 21:00:23,209 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-06-05 21:00:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1439. [2021-06-05 21:00:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 3.9541029207232268) internal successors, (5686), 1438 states have internal predecessors, (5686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5686 transitions. [2021-06-05 21:00:23,240 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5686 transitions. Word has length 25 [2021-06-05 21:00:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:23,240 INFO L482 AbstractCegarLoop]: Abstraction has 1439 states and 5686 transitions. [2021-06-05 21:00:23,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5686 transitions. [2021-06-05 21:00:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:23,241 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:23,242 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:23,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-06-05 21:00:23,242 INFO L430 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash -514499105, now seen corresponding path program 606 times [2021-06-05 21:00:23,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:23,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458648305] [2021-06-05 21:00:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:23,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:23,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458648305] [2021-06-05 21:00:23,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458648305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:23,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:23,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:23,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825165426] [2021-06-05 21:00:23,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:23,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:23,308 INFO L87 Difference]: Start difference. First operand 1439 states and 5686 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:23,361 INFO L93 Difference]: Finished difference Result 2754 states and 10289 transitions. [2021-06-05 21:00:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:23,366 INFO L225 Difference]: With dead ends: 2754 [2021-06-05 21:00:23,366 INFO L226 Difference]: Without dead ends: 2465 [2021-06-05 21:00:23,366 INFO L810 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 [2021-06-05 21:00:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-06-05 21:00:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1397. [2021-06-05 21:00:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9792263610315186) internal successors, (5555), 1396 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5555 transitions. [2021-06-05 21:00:23,397 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5555 transitions. Word has length 25 [2021-06-05 21:00:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:23,397 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5555 transitions. [2021-06-05 21:00:23,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5555 transitions. [2021-06-05 21:00:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:23,399 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:23,399 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:23,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-06-05 21:00:23,399 INFO L430 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash 540793375, now seen corresponding path program 607 times [2021-06-05 21:00:23,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:23,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570266265] [2021-06-05 21:00:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:23,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:23,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570266265] [2021-06-05 21:00:23,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570266265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:23,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:23,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:23,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737285587] [2021-06-05 21:00:23,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:23,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:23,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:23,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:23,477 INFO L87 Difference]: Start difference. First operand 1397 states and 5555 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:23,535 INFO L93 Difference]: Finished difference Result 2884 states and 10902 transitions. [2021-06-05 21:00:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:23,540 INFO L225 Difference]: With dead ends: 2884 [2021-06-05 21:00:23,541 INFO L226 Difference]: Without dead ends: 2599 [2021-06-05 21:00:23,541 INFO L810 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 [2021-06-05 21:00:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-06-05 21:00:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 1461. [2021-06-05 21:00:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.969178082191781) internal successors, (5795), 1460 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 5795 transitions. [2021-06-05 21:00:23,575 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 5795 transitions. Word has length 25 [2021-06-05 21:00:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:23,575 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 5795 transitions. [2021-06-05 21:00:23,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 5795 transitions. [2021-06-05 21:00:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:23,577 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:23,577 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:23,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-06-05 21:00:23,578 INFO L430 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:23,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1502543619, now seen corresponding path program 608 times [2021-06-05 21:00:23,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:23,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571177531] [2021-06-05 21:00:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:23,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:23,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571177531] [2021-06-05 21:00:23,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571177531] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:23,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:23,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:23,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525541687] [2021-06-05 21:00:23,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:23,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:23,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:23,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:23,650 INFO L87 Difference]: Start difference. First operand 1461 states and 5795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:23,705 INFO L93 Difference]: Finished difference Result 2882 states and 10851 transitions. [2021-06-05 21:00:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:23,710 INFO L225 Difference]: With dead ends: 2882 [2021-06-05 21:00:23,710 INFO L226 Difference]: Without dead ends: 2553 [2021-06-05 21:00:23,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-06-05 21:00:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1415. [2021-06-05 21:00:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.9773691654879775) internal successors, (5624), 1414 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5624 transitions. [2021-06-05 21:00:23,742 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5624 transitions. Word has length 25 [2021-06-05 21:00:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:23,742 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5624 transitions. [2021-06-05 21:00:23,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5624 transitions. [2021-06-05 21:00:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:23,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:23,744 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:23,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-06-05 21:00:23,744 INFO L430 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash -255233505, now seen corresponding path program 609 times [2021-06-05 21:00:23,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:23,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380234964] [2021-06-05 21:00:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:23,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:23,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380234964] [2021-06-05 21:00:23,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380234964] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:23,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:23,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:23,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208301194] [2021-06-05 21:00:23,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:23,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:23,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:23,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:23,821 INFO L87 Difference]: Start difference. First operand 1415 states and 5624 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:23,873 INFO L93 Difference]: Finished difference Result 2854 states and 10765 transitions. [2021-06-05 21:00:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:23,878 INFO L225 Difference]: With dead ends: 2854 [2021-06-05 21:00:23,878 INFO L226 Difference]: Without dead ends: 2569 [2021-06-05 21:00:23,878 INFO L810 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 [2021-06-05 21:00:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-06-05 21:00:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1451. [2021-06-05 21:00:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.9613793103448276) internal successors, (5744), 1450 states have internal predecessors, (5744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5744 transitions. [2021-06-05 21:00:23,909 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5744 transitions. Word has length 25 [2021-06-05 21:00:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:23,909 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5744 transitions. [2021-06-05 21:00:23,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5744 transitions. [2021-06-05 21:00:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:23,911 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:23,911 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:23,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-06-05 21:00:23,911 INFO L430 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:23,912 INFO L82 PathProgramCache]: Analyzing trace with hash 300554783, now seen corresponding path program 610 times [2021-06-05 21:00:23,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:23,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129650430] [2021-06-05 21:00:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:23,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:23,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129650430] [2021-06-05 21:00:23,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129650430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:23,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:23,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:23,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160912865] [2021-06-05 21:00:23,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:23,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:23,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:23,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:23,996 INFO L87 Difference]: Start difference. First operand 1451 states and 5744 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:24,063 INFO L93 Difference]: Finished difference Result 2832 states and 10648 transitions. [2021-06-05 21:00:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:24,069 INFO L225 Difference]: With dead ends: 2832 [2021-06-05 21:00:24,069 INFO L226 Difference]: Without dead ends: 2533 [2021-06-05 21:00:24,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-06-05 21:00:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1415. [2021-06-05 21:00:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.9646393210749644) internal successors, (5606), 1414 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5606 transitions. [2021-06-05 21:00:24,100 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5606 transitions. Word has length 25 [2021-06-05 21:00:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:24,100 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5606 transitions. [2021-06-05 21:00:24,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5606 transitions. [2021-06-05 21:00:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:24,102 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:24,102 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:24,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-06-05 21:00:24,102 INFO L430 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash 727114109, now seen corresponding path program 611 times [2021-06-05 21:00:24,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:24,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935571749] [2021-06-05 21:00:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:24,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:24,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935571749] [2021-06-05 21:00:24,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935571749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:24,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:24,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:24,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212396009] [2021-06-05 21:00:24,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:24,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:24,165 INFO L87 Difference]: Start difference. First operand 1415 states and 5606 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:24,219 INFO L93 Difference]: Finished difference Result 2850 states and 10737 transitions. [2021-06-05 21:00:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:24,219 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 [2021-06-05 21:00:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:24,224 INFO L225 Difference]: With dead ends: 2850 [2021-06-05 21:00:24,224 INFO L226 Difference]: Without dead ends: 2567 [2021-06-05 21:00:24,224 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:24,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-06-05 21:00:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1451. [2021-06-05 21:00:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.9489655172413793) internal successors, (5726), 1450 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5726 transitions. [2021-06-05 21:00:24,255 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5726 transitions. Word has length 25 [2021-06-05 21:00:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:24,255 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5726 transitions. [2021-06-05 21:00:24,255 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) [2021-06-05 21:00:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5726 transitions. [2021-06-05 21:00:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:24,257 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:24,257 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:24,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-06-05 21:00:24,257 INFO L430 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash 520306143, now seen corresponding path program 612 times [2021-06-05 21:00:24,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:24,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086238665] [2021-06-05 21:00:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:24,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:24,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086238665] [2021-06-05 21:00:24,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086238665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:24,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:24,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:24,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320752484] [2021-06-05 21:00:24,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:24,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:24,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:24,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:24,322 INFO L87 Difference]: Start difference. First operand 1451 states and 5726 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:24,379 INFO L93 Difference]: Finished difference Result 2830 states and 10625 transitions. [2021-06-05 21:00:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:24,379 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 [2021-06-05 21:00:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:24,384 INFO L225 Difference]: With dead ends: 2830 [2021-06-05 21:00:24,384 INFO L226 Difference]: Without dead ends: 2513 [2021-06-05 21:00:24,384 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-06-05 21:00:24,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1397. [2021-06-05 21:00:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9749283667621778) internal successors, (5549), 1396 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5549 transitions. [2021-06-05 21:00:24,415 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5549 transitions. Word has length 25 [2021-06-05 21:00:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:24,415 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5549 transitions. [2021-06-05 21:00:24,415 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) [2021-06-05 21:00:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5549 transitions. [2021-06-05 21:00:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:24,417 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:24,417 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:24,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-06-05 21:00:24,417 INFO L430 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash -315954691, now seen corresponding path program 613 times [2021-06-05 21:00:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:24,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146205603] [2021-06-05 21:00:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:24,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:24,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146205603] [2021-06-05 21:00:24,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146205603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:24,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:24,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:24,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328552957] [2021-06-05 21:00:24,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:24,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:24,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:24,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:24,483 INFO L87 Difference]: Start difference. First operand 1397 states and 5549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:24,535 INFO L93 Difference]: Finished difference Result 2758 states and 10347 transitions. [2021-06-05 21:00:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:24,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:24,540 INFO L225 Difference]: With dead ends: 2758 [2021-06-05 21:00:24,540 INFO L226 Difference]: Without dead ends: 2473 [2021-06-05 21:00:24,540 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-06-05 21:00:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1437. [2021-06-05 21:00:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.964484679665738) internal successors, (5693), 1436 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 5693 transitions. [2021-06-05 21:00:24,571 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 5693 transitions. Word has length 25 [2021-06-05 21:00:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:24,571 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 5693 transitions. [2021-06-05 21:00:24,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 5693 transitions. [2021-06-05 21:00:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:24,573 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:24,573 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:24,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-06-05 21:00:24,573 INFO L430 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:24,573 INFO L82 PathProgramCache]: Analyzing trace with hash 876511741, now seen corresponding path program 614 times [2021-06-05 21:00:24,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:24,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370051811] [2021-06-05 21:00:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:24,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:24,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370051811] [2021-06-05 21:00:24,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370051811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:24,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:24,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:24,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664075340] [2021-06-05 21:00:24,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:24,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:24,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:24,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:24,637 INFO L87 Difference]: Start difference. First operand 1437 states and 5693 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:24,701 INFO L93 Difference]: Finished difference Result 2720 states and 10166 transitions. [2021-06-05 21:00:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:24,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:24,706 INFO L225 Difference]: With dead ends: 2720 [2021-06-05 21:00:24,706 INFO L226 Difference]: Without dead ends: 2445 [2021-06-05 21:00:24,706 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-06-05 21:00:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1409. [2021-06-05 21:00:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.9723011363636362) internal successors, (5593), 1408 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5593 transitions. [2021-06-05 21:00:24,737 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5593 transitions. Word has length 25 [2021-06-05 21:00:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:24,737 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5593 transitions. [2021-06-05 21:00:24,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5593 transitions. [2021-06-05 21:00:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:24,739 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:24,739 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:24,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-06-05 21:00:24,739 INFO L430 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash -796856737, now seen corresponding path program 615 times [2021-06-05 21:00:24,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:24,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259552530] [2021-06-05 21:00:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:24,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:24,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259552530] [2021-06-05 21:00:24,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259552530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:24,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:24,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:24,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471053242] [2021-06-05 21:00:24,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:24,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:24,817 INFO L87 Difference]: Start difference. First operand 1409 states and 5593 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:24,869 INFO L93 Difference]: Finished difference Result 2782 states and 10447 transitions. [2021-06-05 21:00:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:24,870 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 [2021-06-05 21:00:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:24,874 INFO L225 Difference]: With dead ends: 2782 [2021-06-05 21:00:24,875 INFO L226 Difference]: Without dead ends: 2497 [2021-06-05 21:00:24,875 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-06-05 21:00:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 1445. [2021-06-05 21:00:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.956371191135734) internal successors, (5713), 1444 states have internal predecessors, (5713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5713 transitions. [2021-06-05 21:00:24,905 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5713 transitions. Word has length 25 [2021-06-05 21:00:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:24,905 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5713 transitions. [2021-06-05 21:00:24,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5713 transitions. [2021-06-05 21:00:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:24,907 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:24,907 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:24,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-06-05 21:00:24,907 INFO L430 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:24,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1722506755, now seen corresponding path program 616 times [2021-06-05 21:00:24,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:24,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764534562] [2021-06-05 21:00:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:24,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:24,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764534562] [2021-06-05 21:00:24,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764534562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:24,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:24,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:24,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732215266] [2021-06-05 21:00:24,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:24,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:24,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:24,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:24,982 INFO L87 Difference]: Start difference. First operand 1445 states and 5713 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,035 INFO L93 Difference]: Finished difference Result 2760 states and 10330 transitions. [2021-06-05 21:00:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,040 INFO L225 Difference]: With dead ends: 2760 [2021-06-05 21:00:25,040 INFO L226 Difference]: Without dead ends: 2461 [2021-06-05 21:00:25,040 INFO L810 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 [2021-06-05 21:00:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-06-05 21:00:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 1409. [2021-06-05 21:00:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.963778409090909) internal successors, (5581), 1408 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5581 transitions. [2021-06-05 21:00:25,070 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5581 transitions. Word has length 25 [2021-06-05 21:00:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:25,070 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5581 transitions. [2021-06-05 21:00:25,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5581 transitions. [2021-06-05 21:00:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:25,072 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:25,072 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:25,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-06-05 21:00:25,072 INFO L430 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:25,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:25,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1881855491, now seen corresponding path program 617 times [2021-06-05 21:00:25,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:25,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500855535] [2021-06-05 21:00:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:25,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:25,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500855535] [2021-06-05 21:00:25,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500855535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:25,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:25,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:25,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808174383] [2021-06-05 21:00:25,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:25,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:25,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:25,137 INFO L87 Difference]: Start difference. First operand 1409 states and 5581 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,188 INFO L93 Difference]: Finished difference Result 2694 states and 10073 transitions. [2021-06-05 21:00:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,193 INFO L225 Difference]: With dead ends: 2694 [2021-06-05 21:00:25,193 INFO L226 Difference]: Without dead ends: 2447 [2021-06-05 21:00:25,194 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-06-05 21:00:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1433. [2021-06-05 21:00:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.9504189944134076) internal successors, (5657), 1432 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 5657 transitions. [2021-06-05 21:00:25,224 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 5657 transitions. Word has length 25 [2021-06-05 21:00:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:25,224 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 5657 transitions. [2021-06-05 21:00:25,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 5657 transitions. [2021-06-05 21:00:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:25,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:25,226 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:25,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-06-05 21:00:25,226 INFO L430 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:25,227 INFO L82 PathProgramCache]: Analyzing trace with hash -800792865, now seen corresponding path program 618 times [2021-06-05 21:00:25,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:25,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575807793] [2021-06-05 21:00:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:25,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:25,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575807793] [2021-06-05 21:00:25,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575807793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:25,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:25,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:25,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325542083] [2021-06-05 21:00:25,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:25,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:25,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:25,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:25,292 INFO L87 Difference]: Start difference. First operand 1433 states and 5657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,351 INFO L93 Difference]: Finished difference Result 2710 states and 10121 transitions. [2021-06-05 21:00:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:25,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,356 INFO L225 Difference]: With dead ends: 2710 [2021-06-05 21:00:25,356 INFO L226 Difference]: Without dead ends: 2411 [2021-06-05 21:00:25,357 INFO L810 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 [2021-06-05 21:00:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2021-06-05 21:00:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1397. [2021-06-05 21:00:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9706303724928365) internal successors, (5543), 1396 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5543 transitions. [2021-06-05 21:00:25,387 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5543 transitions. Word has length 25 [2021-06-05 21:00:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:25,387 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5543 transitions. [2021-06-05 21:00:25,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5543 transitions. [2021-06-05 21:00:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:25,388 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:25,389 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:25,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-06-05 21:00:25,389 INFO L430 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash 656441819, now seen corresponding path program 619 times [2021-06-05 21:00:25,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:25,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205292975] [2021-06-05 21:00:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:25,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:25,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205292975] [2021-06-05 21:00:25,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205292975] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:25,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:25,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:25,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974319767] [2021-06-05 21:00:25,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:25,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:25,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:25,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:25,454 INFO L87 Difference]: Start difference. First operand 1397 states and 5543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,505 INFO L93 Difference]: Finished difference Result 2752 states and 10326 transitions. [2021-06-05 21:00:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,510 INFO L225 Difference]: With dead ends: 2752 [2021-06-05 21:00:25,510 INFO L226 Difference]: Without dead ends: 2469 [2021-06-05 21:00:25,510 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-06-05 21:00:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1437. [2021-06-05 21:00:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.9603064066852367) internal successors, (5687), 1436 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 5687 transitions. [2021-06-05 21:00:25,541 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 5687 transitions. Word has length 25 [2021-06-05 21:00:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:25,541 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 5687 transitions. [2021-06-05 21:00:25,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 5687 transitions. [2021-06-05 21:00:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:25,542 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:25,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:25,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-06-05 21:00:25,543 INFO L430 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1737504445, now seen corresponding path program 620 times [2021-06-05 21:00:25,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:25,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207575537] [2021-06-05 21:00:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:25,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:25,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207575537] [2021-06-05 21:00:25,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207575537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:25,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:25,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:25,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147154312] [2021-06-05 21:00:25,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:25,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:25,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:25,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:25,609 INFO L87 Difference]: Start difference. First operand 1437 states and 5687 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,664 INFO L93 Difference]: Finished difference Result 2716 states and 10150 transitions. [2021-06-05 21:00:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,669 INFO L225 Difference]: With dead ends: 2716 [2021-06-05 21:00:25,669 INFO L226 Difference]: Without dead ends: 2441 [2021-06-05 21:00:25,670 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2021-06-05 21:00:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1409. [2021-06-05 21:00:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.968039772727273) internal successors, (5587), 1408 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5587 transitions. [2021-06-05 21:00:25,700 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5587 transitions. Word has length 25 [2021-06-05 21:00:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:25,700 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5587 transitions. [2021-06-05 21:00:25,700 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) [2021-06-05 21:00:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5587 transitions. [2021-06-05 21:00:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:25,701 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:25,702 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:25,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-06-05 21:00:25,702 INFO L430 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:25,702 INFO L82 PathProgramCache]: Analyzing trace with hash 175539773, now seen corresponding path program 621 times [2021-06-05 21:00:25,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:25,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019713777] [2021-06-05 21:00:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:25,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:25,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019713777] [2021-06-05 21:00:25,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019713777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:25,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:25,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:25,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286815478] [2021-06-05 21:00:25,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:25,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:25,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:25,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:25,768 INFO L87 Difference]: Start difference. First operand 1409 states and 5587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,819 INFO L93 Difference]: Finished difference Result 2776 states and 10426 transitions. [2021-06-05 21:00:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,824 INFO L225 Difference]: With dead ends: 2776 [2021-06-05 21:00:25,824 INFO L226 Difference]: Without dead ends: 2493 [2021-06-05 21:00:25,824 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-06-05 21:00:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 1445. [2021-06-05 21:00:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.9522160664819945) internal successors, (5707), 1444 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5707 transitions. [2021-06-05 21:00:25,855 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5707 transitions. Word has length 25 [2021-06-05 21:00:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:25,855 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5707 transitions. [2021-06-05 21:00:25,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5707 transitions. [2021-06-05 21:00:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:25,857 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:25,857 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:25,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-06-05 21:00:25,857 INFO L430 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1512706499, now seen corresponding path program 622 times [2021-06-05 21:00:25,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:25,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180967418] [2021-06-05 21:00:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:25,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:25,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180967418] [2021-06-05 21:00:25,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180967418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:25,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:25,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:25,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622264067] [2021-06-05 21:00:25,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:25,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:25,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:25,933 INFO L87 Difference]: Start difference. First operand 1445 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:25,986 INFO L93 Difference]: Finished difference Result 2756 states and 10314 transitions. [2021-06-05 21:00:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:25,986 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 [2021-06-05 21:00:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:25,991 INFO L225 Difference]: With dead ends: 2756 [2021-06-05 21:00:25,991 INFO L226 Difference]: Without dead ends: 2457 [2021-06-05 21:00:25,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-06-05 21:00:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1409. [2021-06-05 21:00:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.9595170454545454) internal successors, (5575), 1408 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5575 transitions. [2021-06-05 21:00:26,022 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5575 transitions. Word has length 25 [2021-06-05 21:00:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:26,022 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5575 transitions. [2021-06-05 21:00:26,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5575 transitions. [2021-06-05 21:00:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:26,024 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:26,024 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:26,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-06-05 21:00:26,024 INFO L430 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:26,025 INFO L82 PathProgramCache]: Analyzing trace with hash 563544735, now seen corresponding path program 623 times [2021-06-05 21:00:26,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:26,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828406212] [2021-06-05 21:00:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:26,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:26,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828406212] [2021-06-05 21:00:26,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828406212] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:26,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:26,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:26,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814903337] [2021-06-05 21:00:26,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:26,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:26,095 INFO L87 Difference]: Start difference. First operand 1409 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:26,147 INFO L93 Difference]: Finished difference Result 2692 states and 10062 transitions. [2021-06-05 21:00:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:26,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:26,152 INFO L225 Difference]: With dead ends: 2692 [2021-06-05 21:00:26,152 INFO L226 Difference]: Without dead ends: 2445 [2021-06-05 21:00:26,152 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-06-05 21:00:26,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1433. [2021-06-05 21:00:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.94622905027933) internal successors, (5651), 1432 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 5651 transitions. [2021-06-05 21:00:26,183 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 5651 transitions. Word has length 25 [2021-06-05 21:00:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:26,183 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 5651 transitions. [2021-06-05 21:00:26,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 5651 transitions. [2021-06-05 21:00:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:26,185 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:26,185 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:26,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-06-05 21:00:26,185 INFO L430 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash -283252227, now seen corresponding path program 624 times [2021-06-05 21:00:26,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:26,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198102036] [2021-06-05 21:00:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:26,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:26,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198102036] [2021-06-05 21:00:26,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198102036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:26,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:26,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:26,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573392409] [2021-06-05 21:00:26,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:26,260 INFO L87 Difference]: Start difference. First operand 1433 states and 5651 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:26,327 INFO L93 Difference]: Finished difference Result 2708 states and 10110 transitions. [2021-06-05 21:00:26,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:26,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:26,333 INFO L225 Difference]: With dead ends: 2708 [2021-06-05 21:00:26,334 INFO L226 Difference]: Without dead ends: 2403 [2021-06-05 21:00:26,334 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-06-05 21:00:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 1391. [2021-06-05 21:00:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.9762589928057555) internal successors, (5527), 1390 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 5527 transitions. [2021-06-05 21:00:26,364 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 5527 transitions. Word has length 25 [2021-06-05 21:00:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:26,364 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 5527 transitions. [2021-06-05 21:00:26,364 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) [2021-06-05 21:00:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 5527 transitions. [2021-06-05 21:00:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:26,366 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:26,366 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:26,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-06-05 21:00:26,366 INFO L430 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:26,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1270425503, now seen corresponding path program 625 times [2021-06-05 21:00:26,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:26,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732683363] [2021-06-05 21:00:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:26,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:26,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732683363] [2021-06-05 21:00:26,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732683363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:26,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:26,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:26,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115114803] [2021-06-05 21:00:26,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:26,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:26,464 INFO L87 Difference]: Start difference. First operand 1391 states and 5527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:26,521 INFO L93 Difference]: Finished difference Result 2828 states and 10635 transitions. [2021-06-05 21:00:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:26,527 INFO L225 Difference]: With dead ends: 2828 [2021-06-05 21:00:26,527 INFO L226 Difference]: Without dead ends: 2543 [2021-06-05 21:00:26,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-06-05 21:00:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1437. [2021-06-05 21:00:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.9554317548746516) internal successors, (5680), 1436 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 5680 transitions. [2021-06-05 21:00:26,558 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 5680 transitions. Word has length 25 [2021-06-05 21:00:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:26,558 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 5680 transitions. [2021-06-05 21:00:26,558 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) [2021-06-05 21:00:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 5680 transitions. [2021-06-05 21:00:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:26,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:26,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:26,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-06-05 21:00:26,560 INFO L430 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:26,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:26,560 INFO L82 PathProgramCache]: Analyzing trace with hash -772911491, now seen corresponding path program 626 times [2021-06-05 21:00:26,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:26,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275327130] [2021-06-05 21:00:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:26,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:26,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275327130] [2021-06-05 21:00:26,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275327130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:26,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:26,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680917959] [2021-06-05 21:00:26,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:26,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:26,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:26,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:26,633 INFO L87 Difference]: Start difference. First operand 1437 states and 5680 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:26,691 INFO L93 Difference]: Finished difference Result 2826 states and 10584 transitions. [2021-06-05 21:00:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:26,697 INFO L225 Difference]: With dead ends: 2826 [2021-06-05 21:00:26,697 INFO L226 Difference]: Without dead ends: 2497 [2021-06-05 21:00:26,698 INFO L810 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 [2021-06-05 21:00:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-06-05 21:00:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 1391. [2021-06-05 21:00:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.966187050359712) internal successors, (5513), 1390 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 5513 transitions. [2021-06-05 21:00:26,728 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 5513 transitions. Word has length 25 [2021-06-05 21:00:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:26,728 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 5513 transitions. [2021-06-05 21:00:26,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 5513 transitions. [2021-06-05 21:00:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:26,729 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:26,730 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:26,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-06-05 21:00:26,730 INFO L430 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:26,730 INFO L82 PathProgramCache]: Analyzing trace with hash 423628541, now seen corresponding path program 627 times [2021-06-05 21:00:26,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:26,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290306101] [2021-06-05 21:00:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:26,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:26,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290306101] [2021-06-05 21:00:26,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290306101] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:26,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:26,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:26,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854558140] [2021-06-05 21:00:26,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:26,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:26,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:26,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:26,802 INFO L87 Difference]: Start difference. First operand 1391 states and 5513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:26,854 INFO L93 Difference]: Finished difference Result 2774 states and 10390 transitions. [2021-06-05 21:00:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:26,859 INFO L225 Difference]: With dead ends: 2774 [2021-06-05 21:00:26,859 INFO L226 Difference]: Without dead ends: 2489 [2021-06-05 21:00:26,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2021-06-05 21:00:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1419. [2021-06-05 21:00:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.949929478138223) internal successors, (5601), 1418 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5601 transitions. [2021-06-05 21:00:26,890 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5601 transitions. Word has length 25 [2021-06-05 21:00:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:26,890 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5601 transitions. [2021-06-05 21:00:26,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5601 transitions. [2021-06-05 21:00:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:26,891 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:26,892 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:26,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-06-05 21:00:26,892 INFO L430 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1616094973, now seen corresponding path program 628 times [2021-06-05 21:00:26,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:26,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694924595] [2021-06-05 21:00:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:26,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:26,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694924595] [2021-06-05 21:00:26,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694924595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:26,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:26,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:26,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223368933] [2021-06-05 21:00:26,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:26,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:26,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:26,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:26,970 INFO L87 Difference]: Start difference. First operand 1419 states and 5601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:27,036 INFO L93 Difference]: Finished difference Result 2736 states and 10209 transitions. [2021-06-05 21:00:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:27,041 INFO L225 Difference]: With dead ends: 2736 [2021-06-05 21:00:27,041 INFO L226 Difference]: Without dead ends: 2461 [2021-06-05 21:00:27,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-06-05 21:00:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 1391. [2021-06-05 21:00:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.956115107913669) internal successors, (5499), 1390 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 5499 transitions. [2021-06-05 21:00:27,071 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 5499 transitions. Word has length 25 [2021-06-05 21:00:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:27,072 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 5499 transitions. [2021-06-05 21:00:27,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 5499 transitions. [2021-06-05 21:00:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:27,073 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:27,073 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:27,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-06-05 21:00:27,074 INFO L430 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1405976155, now seen corresponding path program 629 times [2021-06-05 21:00:27,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:27,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517901342] [2021-06-05 21:00:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:27,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:27,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517901342] [2021-06-05 21:00:27,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517901342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:27,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:27,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:27,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739617994] [2021-06-05 21:00:27,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:27,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:27,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:27,144 INFO L87 Difference]: Start difference. First operand 1391 states and 5499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:27,193 INFO L93 Difference]: Finished difference Result 2770 states and 10366 transitions. [2021-06-05 21:00:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:27,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:27,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:27,198 INFO L225 Difference]: With dead ends: 2770 [2021-06-05 21:00:27,198 INFO L226 Difference]: Without dead ends: 2487 [2021-06-05 21:00:27,199 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2021-06-05 21:00:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 1419. [2021-06-05 21:00:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.940056417489422) internal successors, (5587), 1418 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5587 transitions. [2021-06-05 21:00:27,229 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5587 transitions. Word has length 25 [2021-06-05 21:00:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:27,229 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5587 transitions. [2021-06-05 21:00:27,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5587 transitions. [2021-06-05 21:00:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:27,231 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:27,231 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:27,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-06-05 21:00:27,231 INFO L430 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:27,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1807928515, now seen corresponding path program 630 times [2021-06-05 21:00:27,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:27,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770031884] [2021-06-05 21:00:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:27,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:27,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770031884] [2021-06-05 21:00:27,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770031884] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:27,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:27,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537905460] [2021-06-05 21:00:27,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:27,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:27,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:27,305 INFO L87 Difference]: Start difference. First operand 1419 states and 5587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:27,433 INFO L93 Difference]: Finished difference Result 2734 states and 10190 transitions. [2021-06-05 21:00:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:27,438 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 21:00:27,438 INFO L226 Difference]: Without dead ends: 2445 [2021-06-05 21:00:27,438 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-06-05 21:00:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1377. [2021-06-05 21:00:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.964389534883721) internal successors, (5455), 1376 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5455 transitions. [2021-06-05 21:00:27,468 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5455 transitions. Word has length 25 [2021-06-05 21:00:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:27,468 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 5455 transitions. [2021-06-05 21:00:27,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5455 transitions. [2021-06-05 21:00:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:27,470 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:27,470 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:27,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-06-05 21:00:27,470 INFO L430 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1591582817, now seen corresponding path program 631 times [2021-06-05 21:00:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:27,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233871508] [2021-06-05 21:00:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:27,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:27,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233871508] [2021-06-05 21:00:27,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233871508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:27,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:27,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:27,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717479026] [2021-06-05 21:00:27,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:27,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:27,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:27,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:27,537 INFO L87 Difference]: Start difference. First operand 1377 states and 5455 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:27,590 INFO L93 Difference]: Finished difference Result 2971 states and 11171 transitions. [2021-06-05 21:00:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:27,591 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 [2021-06-05 21:00:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:27,596 INFO L225 Difference]: With dead ends: 2971 [2021-06-05 21:00:27,596 INFO L226 Difference]: Without dead ends: 2686 [2021-06-05 21:00:27,596 INFO L810 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 [2021-06-05 21:00:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-06-05 21:00:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1470. [2021-06-05 21:00:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.950306330837304) internal successors, (5803), 1469 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5803 transitions. [2021-06-05 21:00:27,629 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5803 transitions. Word has length 25 [2021-06-05 21:00:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:27,629 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5803 transitions. [2021-06-05 21:00:27,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5803 transitions. [2021-06-05 21:00:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:27,631 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:27,631 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:27,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-06-05 21:00:27,631 INFO L430 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:27,631 INFO L82 PathProgramCache]: Analyzing trace with hash 660047485, now seen corresponding path program 632 times [2021-06-05 21:00:27,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:27,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083832812] [2021-06-05 21:00:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:27,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:27,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083832812] [2021-06-05 21:00:27,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083832812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:27,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:27,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:27,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533405286] [2021-06-05 21:00:27,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:27,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:27,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:27,710 INFO L87 Difference]: Start difference. First operand 1470 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:27,776 INFO L93 Difference]: Finished difference Result 2969 states and 11120 transitions. [2021-06-05 21:00:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:27,782 INFO L225 Difference]: With dead ends: 2969 [2021-06-05 21:00:27,782 INFO L226 Difference]: Without dead ends: 2640 [2021-06-05 21:00:27,782 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-06-05 21:00:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1424. [2021-06-05 21:00:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9543218552354182) internal successors, (5627), 1423 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5627 transitions. [2021-06-05 21:00:27,813 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5627 transitions. Word has length 25 [2021-06-05 21:00:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:27,813 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5627 transitions. [2021-06-05 21:00:27,813 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) [2021-06-05 21:00:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5627 transitions. [2021-06-05 21:00:27,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:27,815 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:27,815 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:27,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-06-05 21:00:27,815 INFO L430 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1165842529, now seen corresponding path program 633 times [2021-06-05 21:00:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:27,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530710620] [2021-06-05 21:00:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:27,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:27,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530710620] [2021-06-05 21:00:27,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530710620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:27,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:27,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:27,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422668114] [2021-06-05 21:00:27,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:27,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:27,883 INFO L87 Difference]: Start difference. First operand 1424 states and 5627 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:27,936 INFO L93 Difference]: Finished difference Result 2945 states and 11025 transitions. [2021-06-05 21:00:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:27,941 INFO L225 Difference]: With dead ends: 2945 [2021-06-05 21:00:27,941 INFO L226 Difference]: Without dead ends: 2660 [2021-06-05 21:00:27,941 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-06-05 21:00:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1503. [2021-06-05 21:00:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.9241011984021306) internal successors, (5894), 1502 states have internal predecessors, (5894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5894 transitions. [2021-06-05 21:00:27,974 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5894 transitions. Word has length 25 [2021-06-05 21:00:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:27,974 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5894 transitions. [2021-06-05 21:00:27,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5894 transitions. [2021-06-05 21:00:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:27,976 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:27,976 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:27,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-06-05 21:00:27,976 INFO L430 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1721630817, now seen corresponding path program 634 times [2021-06-05 21:00:27,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:27,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782606471] [2021-06-05 21:00:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:28,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:28,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782606471] [2021-06-05 21:00:28,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782606471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:28,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:28,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:28,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263715182] [2021-06-05 21:00:28,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:28,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:28,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:28,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:28,041 INFO L87 Difference]: Start difference. First operand 1503 states and 5894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:28,106 INFO L93 Difference]: Finished difference Result 2786 states and 10467 transitions. [2021-06-05 21:00:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:28,111 INFO L225 Difference]: With dead ends: 2786 [2021-06-05 21:00:28,111 INFO L226 Difference]: Without dead ends: 2389 [2021-06-05 21:00:28,111 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-06-05 21:00:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1424. [2021-06-05 21:00:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.926914968376669) internal successors, (5588), 1423 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5588 transitions. [2021-06-05 21:00:28,140 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5588 transitions. Word has length 25 [2021-06-05 21:00:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:28,140 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5588 transitions. [2021-06-05 21:00:28,140 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) [2021-06-05 21:00:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5588 transitions. [2021-06-05 21:00:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:28,142 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:28,142 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:28,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-06-05 21:00:28,142 INFO L430 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:28,142 INFO L82 PathProgramCache]: Analyzing trace with hash -183494915, now seen corresponding path program 635 times [2021-06-05 21:00:28,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:28,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636378084] [2021-06-05 21:00:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:28,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:28,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636378084] [2021-06-05 21:00:28,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636378084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:28,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:28,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:28,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824821221] [2021-06-05 21:00:28,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:28,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:28,208 INFO L87 Difference]: Start difference. First operand 1424 states and 5588 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:28,267 INFO L93 Difference]: Finished difference Result 2926 states and 10930 transitions. [2021-06-05 21:00:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:28,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:28,272 INFO L225 Difference]: With dead ends: 2926 [2021-06-05 21:00:28,272 INFO L226 Difference]: Without dead ends: 2643 [2021-06-05 21:00:28,272 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2021-06-05 21:00:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 1486. [2021-06-05 21:00:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.909090909090909) internal successors, (5805), 1485 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5805 transitions. [2021-06-05 21:00:28,304 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5805 transitions. Word has length 25 [2021-06-05 21:00:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:28,304 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5805 transitions. [2021-06-05 21:00:28,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5805 transitions. [2021-06-05 21:00:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:28,306 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:28,306 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:28,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-06-05 21:00:28,306 INFO L430 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1754082783, now seen corresponding path program 636 times [2021-06-05 21:00:28,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:28,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829465445] [2021-06-05 21:00:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:28,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:28,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829465445] [2021-06-05 21:00:28,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829465445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:28,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:28,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:28,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150332004] [2021-06-05 21:00:28,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:28,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:28,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:28,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:28,378 INFO L87 Difference]: Start difference. First operand 1486 states and 5805 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:28,481 INFO L93 Difference]: Finished difference Result 2769 states and 10378 transitions. [2021-06-05 21:00:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:28,481 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 [2021-06-05 21:00:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:28,486 INFO L225 Difference]: With dead ends: 2769 [2021-06-05 21:00:28,486 INFO L226 Difference]: Without dead ends: 2342 [2021-06-05 21:00:28,486 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-06-05 21:00:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1377. [2021-06-05 21:00:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.9505813953488373) internal successors, (5436), 1376 states have internal predecessors, (5436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5436 transitions. [2021-06-05 21:00:28,516 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5436 transitions. Word has length 25 [2021-06-05 21:00:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:28,516 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 5436 transitions. [2021-06-05 21:00:28,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5436 transitions. [2021-06-05 21:00:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:28,519 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:28,519 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:28,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-06-05 21:00:28,520 INFO L430 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:28,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1846636413, now seen corresponding path program 637 times [2021-06-05 21:00:28,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:28,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282198528] [2021-06-05 21:00:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:28,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:28,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282198528] [2021-06-05 21:00:28,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282198528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:28,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:28,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:28,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920424368] [2021-06-05 21:00:28,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:28,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:28,646 INFO L87 Difference]: Start difference. First operand 1377 states and 5436 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:28,702 INFO L93 Difference]: Finished difference Result 2846 states and 10624 transitions. [2021-06-05 21:00:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:28,702 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 [2021-06-05 21:00:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:28,707 INFO L225 Difference]: With dead ends: 2846 [2021-06-05 21:00:28,707 INFO L226 Difference]: Without dead ends: 2561 [2021-06-05 21:00:28,707 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-06-05 21:00:28,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 1435. [2021-06-05 21:00:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.9421199442119943) internal successors, (5653), 1434 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 5653 transitions. [2021-06-05 21:00:28,739 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 5653 transitions. Word has length 25 [2021-06-05 21:00:28,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:28,739 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 5653 transitions. [2021-06-05 21:00:28,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 5653 transitions. [2021-06-05 21:00:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:28,741 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:28,741 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:28,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-06-05 21:00:28,741 INFO L430 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1255864451, now seen corresponding path program 638 times [2021-06-05 21:00:28,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:28,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334165803] [2021-06-05 21:00:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:29,059 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-06-05 21:00:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:29,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:29,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334165803] [2021-06-05 21:00:29,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334165803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:29,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:29,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:29,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739188224] [2021-06-05 21:00:29,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:29,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:29,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:29,061 INFO L87 Difference]: Start difference. First operand 1435 states and 5653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:29,801 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-06-05 21:00:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:29,824 INFO L93 Difference]: Finished difference Result 2808 states and 10443 transitions. [2021-06-05 21:00:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:29,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:29,829 INFO L225 Difference]: With dead ends: 2808 [2021-06-05 21:00:29,829 INFO L226 Difference]: Without dead ends: 2533 [2021-06-05 21:00:29,829 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 705.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-06-05 21:00:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1407. [2021-06-05 21:00:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 3.9480796586059745) internal successors, (5551), 1406 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 5551 transitions. [2021-06-05 21:00:29,861 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 5551 transitions. Word has length 25 [2021-06-05 21:00:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:29,861 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 5551 transitions. [2021-06-05 21:00:29,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 5551 transitions. [2021-06-05 21:00:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:29,862 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:29,862 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:29,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-06-05 21:00:29,863 INFO L430 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash 536055391, now seen corresponding path program 639 times [2021-06-05 21:00:29,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:29,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703632890] [2021-06-05 21:00:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:29,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:29,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703632890] [2021-06-05 21:00:29,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703632890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:29,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:29,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:29,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59123512] [2021-06-05 21:00:29,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:29,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:29,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:29,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:29,935 INFO L87 Difference]: Start difference. First operand 1407 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:30,111 INFO L93 Difference]: Finished difference Result 2874 states and 10718 transitions. [2021-06-05 21:00:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:30,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:30,116 INFO L225 Difference]: With dead ends: 2874 [2021-06-05 21:00:30,117 INFO L226 Difference]: Without dead ends: 2589 [2021-06-05 21:00:30,117 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-06-05 21:00:30,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 1486. [2021-06-05 21:00:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.917845117845118) internal successors, (5818), 1485 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5818 transitions. [2021-06-05 21:00:30,149 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5818 transitions. Word has length 25 [2021-06-05 21:00:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:30,149 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5818 transitions. [2021-06-05 21:00:30,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5818 transitions. [2021-06-05 21:00:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:30,151 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:30,151 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:30,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-06-05 21:00:30,151 INFO L430 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:30,151 INFO L82 PathProgramCache]: Analyzing trace with hash 550274941, now seen corresponding path program 640 times [2021-06-05 21:00:30,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:30,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133565763] [2021-06-05 21:00:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:30,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:30,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133565763] [2021-06-05 21:00:30,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133565763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:30,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:30,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:30,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047117263] [2021-06-05 21:00:30,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:30,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:30,243 INFO L87 Difference]: Start difference. First operand 1486 states and 5818 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:30,333 INFO L93 Difference]: Finished difference Result 2715 states and 10160 transitions. [2021-06-05 21:00:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:30,338 INFO L225 Difference]: With dead ends: 2715 [2021-06-05 21:00:30,338 INFO L226 Difference]: Without dead ends: 2318 [2021-06-05 21:00:30,338 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-06-05 21:00:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1407. [2021-06-05 21:00:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 3.9267425320056897) internal successors, (5521), 1406 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 5521 transitions. [2021-06-05 21:00:30,368 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 5521 transitions. Word has length 25 [2021-06-05 21:00:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:30,368 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 5521 transitions. [2021-06-05 21:00:30,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 5521 transitions. [2021-06-05 21:00:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:30,370 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:30,370 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:30,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-06-05 21:00:30,370 INFO L430 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1502502781, now seen corresponding path program 641 times [2021-06-05 21:00:30,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:30,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577459539] [2021-06-05 21:00:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:30,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:30,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577459539] [2021-06-05 21:00:30,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577459539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:30,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:30,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:30,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957129829] [2021-06-05 21:00:30,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:30,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:30,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:30,464 INFO L87 Difference]: Start difference. First operand 1407 states and 5521 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:30,528 INFO L93 Difference]: Finished difference Result 2801 states and 10401 transitions. [2021-06-05 21:00:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:30,534 INFO L225 Difference]: With dead ends: 2801 [2021-06-05 21:00:30,534 INFO L226 Difference]: Without dead ends: 2554 [2021-06-05 21:00:30,534 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-06-05 21:00:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1451. [2021-06-05 21:00:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.912413793103448) internal successors, (5673), 1450 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5673 transitions. [2021-06-05 21:00:30,566 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5673 transitions. Word has length 25 [2021-06-05 21:00:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:30,566 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5673 transitions. [2021-06-05 21:00:30,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5673 transitions. [2021-06-05 21:00:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:30,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:30,568 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:30,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-06-05 21:00:30,568 INFO L430 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 432983775, now seen corresponding path program 642 times [2021-06-05 21:00:30,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:30,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904647443] [2021-06-05 21:00:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:30,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:30,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904647443] [2021-06-05 21:00:30,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904647443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:30,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:30,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:30,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112986177] [2021-06-05 21:00:30,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:30,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:30,662 INFO L87 Difference]: Start difference. First operand 1451 states and 5673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:30,715 INFO L93 Difference]: Finished difference Result 2680 states and 10015 transitions. [2021-06-05 21:00:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:30,720 INFO L225 Difference]: With dead ends: 2680 [2021-06-05 21:00:30,720 INFO L226 Difference]: Without dead ends: 2288 [2021-06-05 21:00:30,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2021-06-05 21:00:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1377. [2021-06-05 21:00:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.9396802325581395) internal successors, (5421), 1376 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5421 transitions. [2021-06-05 21:00:30,750 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5421 transitions. Word has length 25 [2021-06-05 21:00:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:30,750 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 5421 transitions. [2021-06-05 21:00:30,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5421 transitions. [2021-06-05 21:00:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:30,752 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:30,752 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:30,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-06-05 21:00:30,752 INFO L430 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1475934373, now seen corresponding path program 643 times [2021-06-05 21:00:30,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:30,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482184120] [2021-06-05 21:00:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:30,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:30,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482184120] [2021-06-05 21:00:30,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482184120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:30,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:30,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:30,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301210049] [2021-06-05 21:00:30,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:30,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:30,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:30,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:30,823 INFO L87 Difference]: Start difference. First operand 1377 states and 5421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:30,890 INFO L93 Difference]: Finished difference Result 2815 states and 10515 transitions. [2021-06-05 21:00:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:30,896 INFO L225 Difference]: With dead ends: 2815 [2021-06-05 21:00:30,896 INFO L226 Difference]: Without dead ends: 2532 [2021-06-05 21:00:30,896 INFO L810 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 [2021-06-05 21:00:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-06-05 21:00:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1427. [2021-06-05 21:00:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 3.934081346423562) internal successors, (5610), 1426 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 5610 transitions. [2021-06-05 21:00:30,928 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 5610 transitions. Word has length 25 [2021-06-05 21:00:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:30,928 INFO L482 AbstractCegarLoop]: Abstraction has 1427 states and 5610 transitions. [2021-06-05 21:00:30,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 5610 transitions. [2021-06-05 21:00:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:30,930 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:30,930 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:30,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-06-05 21:00:30,930 INFO L430 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash -394871747, now seen corresponding path program 644 times [2021-06-05 21:00:30,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:30,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808012395] [2021-06-05 21:00:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:31,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:31,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808012395] [2021-06-05 21:00:31,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808012395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:31,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:31,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:31,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576646365] [2021-06-05 21:00:31,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:31,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:31,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:31,008 INFO L87 Difference]: Start difference. First operand 1427 states and 5610 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:31,077 INFO L93 Difference]: Finished difference Result 2779 states and 10339 transitions. [2021-06-05 21:00:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:31,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:31,082 INFO L225 Difference]: With dead ends: 2779 [2021-06-05 21:00:31,082 INFO L226 Difference]: Without dead ends: 2504 [2021-06-05 21:00:31,082 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2021-06-05 21:00:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1399. [2021-06-05 21:00:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.939914163090129) internal successors, (5508), 1398 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 5508 transitions. [2021-06-05 21:00:31,113 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 5508 transitions. Word has length 25 [2021-06-05 21:00:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:31,113 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 5508 transitions. [2021-06-05 21:00:31,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 5508 transitions. [2021-06-05 21:00:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:31,114 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:31,115 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:31,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-06-05 21:00:31,115 INFO L430 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:31,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:31,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1508451901, now seen corresponding path program 645 times [2021-06-05 21:00:31,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:31,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919951494] [2021-06-05 21:00:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:31,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:31,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919951494] [2021-06-05 21:00:31,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919951494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:31,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:31,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:31,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116966217] [2021-06-05 21:00:31,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:31,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:31,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:31,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:31,186 INFO L87 Difference]: Start difference. First operand 1399 states and 5508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:31,247 INFO L93 Difference]: Finished difference Result 2828 states and 10563 transitions. [2021-06-05 21:00:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:31,247 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 [2021-06-05 21:00:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:31,252 INFO L225 Difference]: With dead ends: 2828 [2021-06-05 21:00:31,252 INFO L226 Difference]: Without dead ends: 2545 [2021-06-05 21:00:31,253 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-06-05 21:00:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1461. [2021-06-05 21:00:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.921232876712329) internal successors, (5725), 1460 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 5725 transitions. [2021-06-05 21:00:31,285 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 5725 transitions. Word has length 25 [2021-06-05 21:00:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:31,285 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 5725 transitions. [2021-06-05 21:00:31,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 5725 transitions. [2021-06-05 21:00:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:31,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:31,287 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:31,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-06-05 21:00:31,287 INFO L430 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash -278929859, now seen corresponding path program 646 times [2021-06-05 21:00:31,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:31,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160834293] [2021-06-05 21:00:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:31,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:31,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160834293] [2021-06-05 21:00:31,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160834293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:31,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:31,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:31,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214559602] [2021-06-05 21:00:31,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:31,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:31,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:31,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:31,366 INFO L87 Difference]: Start difference. First operand 1461 states and 5725 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:31,412 INFO L93 Difference]: Finished difference Result 2671 states and 10011 transitions. [2021-06-05 21:00:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:31,412 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 [2021-06-05 21:00:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:31,417 INFO L225 Difference]: With dead ends: 2671 [2021-06-05 21:00:31,417 INFO L226 Difference]: Without dead ends: 2291 [2021-06-05 21:00:31,417 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-06-05 21:00:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1399. [2021-06-05 21:00:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.9241773962804007) internal successors, (5486), 1398 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 5486 transitions. [2021-06-05 21:00:31,476 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 5486 transitions. Word has length 25 [2021-06-05 21:00:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:31,477 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 5486 transitions. [2021-06-05 21:00:31,477 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) [2021-06-05 21:00:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 5486 transitions. [2021-06-05 21:00:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:31,478 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:31,478 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:31,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-06-05 21:00:31,479 INFO L430 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:31,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1896456863, now seen corresponding path program 647 times [2021-06-05 21:00:31,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:31,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759544493] [2021-06-05 21:00:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:31,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:31,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759544493] [2021-06-05 21:00:31,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759544493] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:31,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:31,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:31,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189482510] [2021-06-05 21:00:31,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:31,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:31,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:31,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:31,560 INFO L87 Difference]: Start difference. First operand 1399 states and 5486 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:31,609 INFO L93 Difference]: Finished difference Result 2774 states and 10310 transitions. [2021-06-05 21:00:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:31,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:31,614 INFO L225 Difference]: With dead ends: 2774 [2021-06-05 21:00:31,614 INFO L226 Difference]: Without dead ends: 2527 [2021-06-05 21:00:31,614 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2021-06-05 21:00:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1443. [2021-06-05 21:00:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 3.909847434119279) internal successors, (5638), 1442 states have internal predecessors, (5638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 5638 transitions. [2021-06-05 21:00:31,645 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 5638 transitions. Word has length 25 [2021-06-05 21:00:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:31,645 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 5638 transitions. [2021-06-05 21:00:31,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 5638 transitions. [2021-06-05 21:00:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:31,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:31,646 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:31,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-06-05 21:00:31,647 INFO L430 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1193861251, now seen corresponding path program 648 times [2021-06-05 21:00:31,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:31,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084615378] [2021-06-05 21:00:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:31,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:31,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084615378] [2021-06-05 21:00:31,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084615378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:31,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:31,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:31,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378025972] [2021-06-05 21:00:31,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:31,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:31,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:31,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:31,792 INFO L87 Difference]: Start difference. First operand 1443 states and 5638 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:31,832 INFO L93 Difference]: Finished difference Result 2653 states and 9924 transitions. [2021-06-05 21:00:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:31,836 INFO L225 Difference]: With dead ends: 2653 [2021-06-05 21:00:31,837 INFO L226 Difference]: Without dead ends: 2246 [2021-06-05 21:00:31,837 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-06-05 21:00:31,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1354. [2021-06-05 21:00:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.960827790096083) internal successors, (5359), 1353 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5359 transitions. [2021-06-05 21:00:31,866 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5359 transitions. Word has length 25 [2021-06-05 21:00:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:31,867 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5359 transitions. [2021-06-05 21:00:31,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5359 transitions. [2021-06-05 21:00:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:31,868 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:31,868 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:31,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-06-05 21:00:31,869 INFO L430 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:31,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1725712387, now seen corresponding path program 649 times [2021-06-05 21:00:31,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:31,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821487418] [2021-06-05 21:00:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:31,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:31,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821487418] [2021-06-05 21:00:31,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821487418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:31,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:31,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:31,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269954039] [2021-06-05 21:00:31,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:31,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:31,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:31,935 INFO L87 Difference]: Start difference. First operand 1354 states and 5359 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:31,985 INFO L93 Difference]: Finished difference Result 2777 states and 10420 transitions. [2021-06-05 21:00:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:31,986 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 [2021-06-05 21:00:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:31,990 INFO L225 Difference]: With dead ends: 2777 [2021-06-05 21:00:31,991 INFO L226 Difference]: Without dead ends: 2492 [2021-06-05 21:00:31,991 INFO L810 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 [2021-06-05 21:00:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-06-05 21:00:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 1400. [2021-06-05 21:00:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9399571122230164) internal successors, (5512), 1399 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5512 transitions. [2021-06-05 21:00:32,022 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5512 transitions. Word has length 25 [2021-06-05 21:00:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,022 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5512 transitions. [2021-06-05 21:00:32,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5512 transitions. [2021-06-05 21:00:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,024 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,024 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-06-05 21:00:32,024 INFO L430 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash 525917915, now seen corresponding path program 650 times [2021-06-05 21:00:32,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076820824] [2021-06-05 21:00:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:32,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:32,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076820824] [2021-06-05 21:00:32,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076820824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:32,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:32,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:32,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070892768] [2021-06-05 21:00:32,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:32,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:32,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:32,089 INFO L87 Difference]: Start difference. First operand 1400 states and 5512 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:32,141 INFO L93 Difference]: Finished difference Result 2775 states and 10369 transitions. [2021-06-05 21:00:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:32,146 INFO L225 Difference]: With dead ends: 2775 [2021-06-05 21:00:32,146 INFO L226 Difference]: Without dead ends: 2446 [2021-06-05 21:00:32,146 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-06-05 21:00:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1354. [2021-06-05 21:00:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.9475240206947526) internal successors, (5341), 1353 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5341 transitions. [2021-06-05 21:00:32,176 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5341 transitions. Word has length 25 [2021-06-05 21:00:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,176 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5341 transitions. [2021-06-05 21:00:32,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5341 transitions. [2021-06-05 21:00:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,177 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,177 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-06-05 21:00:32,178 INFO L430 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1773228029, now seen corresponding path program 651 times [2021-06-05 21:00:32,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689619830] [2021-06-05 21:00:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:32,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:32,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689619830] [2021-06-05 21:00:32,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689619830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:32,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:32,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:32,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050315687] [2021-06-05 21:00:32,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:32,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:32,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:32,253 INFO L87 Difference]: Start difference. First operand 1354 states and 5341 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:32,304 INFO L93 Difference]: Finished difference Result 2747 states and 10283 transitions. [2021-06-05 21:00:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:32,305 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 [2021-06-05 21:00:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:32,309 INFO L225 Difference]: With dead ends: 2747 [2021-06-05 21:00:32,309 INFO L226 Difference]: Without dead ends: 2462 [2021-06-05 21:00:32,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-06-05 21:00:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1390. [2021-06-05 21:00:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.931605471562275) internal successors, (5461), 1389 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5461 transitions. [2021-06-05 21:00:32,339 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5461 transitions. Word has length 25 [2021-06-05 21:00:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,339 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5461 transitions. [2021-06-05 21:00:32,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5461 transitions. [2021-06-05 21:00:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,341 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,341 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-06-05 21:00:32,341 INFO L430 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1965950979, now seen corresponding path program 652 times [2021-06-05 21:00:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751588969] [2021-06-05 21:00:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:32,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:32,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751588969] [2021-06-05 21:00:32,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751588969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:32,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:32,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:32,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666799558] [2021-06-05 21:00:32,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:32,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:32,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:32,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:32,416 INFO L87 Difference]: Start difference. First operand 1390 states and 5461 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:32,466 INFO L93 Difference]: Finished difference Result 2725 states and 10166 transitions. [2021-06-05 21:00:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:32,466 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 [2021-06-05 21:00:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:32,471 INFO L225 Difference]: With dead ends: 2725 [2021-06-05 21:00:32,471 INFO L226 Difference]: Without dead ends: 2426 [2021-06-05 21:00:32,471 INFO L810 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 [2021-06-05 21:00:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-06-05 21:00:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1354. [2021-06-05 21:00:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.934220251293422) internal successors, (5323), 1353 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5323 transitions. [2021-06-05 21:00:32,500 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5323 transitions. Word has length 25 [2021-06-05 21:00:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,500 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5323 transitions. [2021-06-05 21:00:32,500 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) [2021-06-05 21:00:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5323 transitions. [2021-06-05 21:00:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,502 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,502 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-06-05 21:00:32,502 INFO L430 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1539391653, now seen corresponding path program 653 times [2021-06-05 21:00:32,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534946887] [2021-06-05 21:00:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:32,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:32,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534946887] [2021-06-05 21:00:32,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534946887] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:32,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:32,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:32,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898872168] [2021-06-05 21:00:32,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:32,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:32,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:32,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:32,567 INFO L87 Difference]: Start difference. First operand 1354 states and 5323 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:32,614 INFO L93 Difference]: Finished difference Result 2743 states and 10255 transitions. [2021-06-05 21:00:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:32,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:32,619 INFO L225 Difference]: With dead ends: 2743 [2021-06-05 21:00:32,619 INFO L226 Difference]: Without dead ends: 2460 [2021-06-05 21:00:32,619 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-06-05 21:00:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1390. [2021-06-05 21:00:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9186465082793376) internal successors, (5443), 1389 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5443 transitions. [2021-06-05 21:00:32,649 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5443 transitions. Word has length 25 [2021-06-05 21:00:32,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,649 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5443 transitions. [2021-06-05 21:00:32,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5443 transitions. [2021-06-05 21:00:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,651 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,651 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-06-05 21:00:32,651 INFO L430 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1746199619, now seen corresponding path program 654 times [2021-06-05 21:00:32,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871495170] [2021-06-05 21:00:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:32,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:32,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871495170] [2021-06-05 21:00:32,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871495170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:32,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:32,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:32,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664783656] [2021-06-05 21:00:32,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:32,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:32,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:32,715 INFO L87 Difference]: Start difference. First operand 1390 states and 5443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:32,764 INFO L93 Difference]: Finished difference Result 2723 states and 10143 transitions. [2021-06-05 21:00:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:32,764 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 [2021-06-05 21:00:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:32,769 INFO L225 Difference]: With dead ends: 2723 [2021-06-05 21:00:32,769 INFO L226 Difference]: Without dead ends: 2406 [2021-06-05 21:00:32,769 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-06-05 21:00:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1336. [2021-06-05 21:00:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.9423220973782773) internal successors, (5263), 1335 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5263 transitions. [2021-06-05 21:00:32,798 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5263 transitions. Word has length 25 [2021-06-05 21:00:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,798 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5263 transitions. [2021-06-05 21:00:32,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5263 transitions. [2021-06-05 21:00:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,800 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,800 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-06-05 21:00:32,800 INFO L430 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1834794719, now seen corresponding path program 655 times [2021-06-05 21:00:32,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867760402] [2021-06-05 21:00:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:32,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:32,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867760402] [2021-06-05 21:00:32,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867760402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:32,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:32,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:32,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342730350] [2021-06-05 21:00:32,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:32,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:32,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:32,867 INFO L87 Difference]: Start difference. First operand 1336 states and 5263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:32,917 INFO L93 Difference]: Finished difference Result 2837 states and 10585 transitions. [2021-06-05 21:00:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:32,922 INFO L225 Difference]: With dead ends: 2837 [2021-06-05 21:00:32,922 INFO L226 Difference]: Without dead ends: 2552 [2021-06-05 21:00:32,922 INFO L810 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 [2021-06-05 21:00:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-06-05 21:00:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1336. [2021-06-05 21:00:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.9078651685393258) internal successors, (5217), 1335 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5217 transitions. [2021-06-05 21:00:32,952 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5217 transitions. Word has length 25 [2021-06-05 21:00:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:32,952 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5217 transitions. [2021-06-05 21:00:32,952 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) [2021-06-05 21:00:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5217 transitions. [2021-06-05 21:00:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:32,953 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:32,953 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:32,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-06-05 21:00:32,954 INFO L430 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:32,954 INFO L82 PathProgramCache]: Analyzing trace with hash -208542275, now seen corresponding path program 656 times [2021-06-05 21:00:32,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:32,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438493404] [2021-06-05 21:00:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:33,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:33,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438493404] [2021-06-05 21:00:33,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438493404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:33,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:33,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:33,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202536409] [2021-06-05 21:00:33,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:33,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:33,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:33,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:33,022 INFO L87 Difference]: Start difference. First operand 1336 states and 5217 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:33,073 INFO L93 Difference]: Finished difference Result 2835 states and 10534 transitions. [2021-06-05 21:00:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:33,078 INFO L225 Difference]: With dead ends: 2835 [2021-06-05 21:00:33,079 INFO L226 Difference]: Without dead ends: 2506 [2021-06-05 21:00:33,079 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-06-05 21:00:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1290. [2021-06-05 21:00:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.9107835531419703) internal successors, (5041), 1289 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5041 transitions. [2021-06-05 21:00:33,107 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5041 transitions. Word has length 25 [2021-06-05 21:00:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:33,107 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5041 transitions. [2021-06-05 21:00:33,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5041 transitions. [2021-06-05 21:00:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:33,108 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:33,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:33,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-06-05 21:00:33,109 INFO L430 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:33,109 INFO L82 PathProgramCache]: Analyzing trace with hash 292204541, now seen corresponding path program 657 times [2021-06-05 21:00:33,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:33,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791410218] [2021-06-05 21:00:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:33,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:33,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791410218] [2021-06-05 21:00:33,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791410218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:33,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:33,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:33,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374394871] [2021-06-05 21:00:33,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:33,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:33,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:33,194 INFO L87 Difference]: Start difference. First operand 1290 states and 5041 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:33,298 INFO L93 Difference]: Finished difference Result 2811 states and 10439 transitions. [2021-06-05 21:00:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:33,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:33,303 INFO L225 Difference]: With dead ends: 2811 [2021-06-05 21:00:33,303 INFO L226 Difference]: Without dead ends: 2526 [2021-06-05 21:00:33,303 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-06-05 21:00:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1369. [2021-06-05 21:00:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 3.8801169590643276) internal successors, (5308), 1368 states have internal predecessors, (5308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 5308 transitions. [2021-06-05 21:00:33,334 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 5308 transitions. Word has length 25 [2021-06-05 21:00:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:33,334 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 5308 transitions. [2021-06-05 21:00:33,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 5308 transitions. [2021-06-05 21:00:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:33,336 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:33,336 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:33,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-06-05 21:00:33,336 INFO L430 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash -263583747, now seen corresponding path program 658 times [2021-06-05 21:00:33,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:33,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780913647] [2021-06-05 21:00:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:33,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:33,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780913647] [2021-06-05 21:00:33,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780913647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:33,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:33,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:33,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506575897] [2021-06-05 21:00:33,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:33,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:33,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:33,430 INFO L87 Difference]: Start difference. First operand 1369 states and 5308 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:33,480 INFO L93 Difference]: Finished difference Result 2652 states and 9881 transitions. [2021-06-05 21:00:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:33,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:33,485 INFO L225 Difference]: With dead ends: 2652 [2021-06-05 21:00:33,485 INFO L226 Difference]: Without dead ends: 2255 [2021-06-05 21:00:33,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-06-05 21:00:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1290. [2021-06-05 21:00:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.8805275407292474) internal successors, (5002), 1289 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5002 transitions. [2021-06-05 21:00:33,512 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5002 transitions. Word has length 25 [2021-06-05 21:00:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:33,512 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5002 transitions. [2021-06-05 21:00:33,512 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) [2021-06-05 21:00:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5002 transitions. [2021-06-05 21:00:33,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:33,513 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:33,514 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:33,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-06-05 21:00:33,514 INFO L430 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:33,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1274552155, now seen corresponding path program 659 times [2021-06-05 21:00:33,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:33,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829260816] [2021-06-05 21:00:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:33,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:33,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829260816] [2021-06-05 21:00:33,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829260816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:33,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:33,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:33,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375040410] [2021-06-05 21:00:33,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:33,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:33,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:33,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:33,604 INFO L87 Difference]: Start difference. First operand 1290 states and 5002 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:33,668 INFO L93 Difference]: Finished difference Result 2792 states and 10344 transitions. [2021-06-05 21:00:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:33,669 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 [2021-06-05 21:00:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:33,673 INFO L225 Difference]: With dead ends: 2792 [2021-06-05 21:00:33,673 INFO L226 Difference]: Without dead ends: 2509 [2021-06-05 21:00:33,674 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2021-06-05 21:00:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1352. [2021-06-05 21:00:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.863064396743153) internal successors, (5219), 1351 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 5219 transitions. [2021-06-05 21:00:33,706 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 5219 transitions. Word has length 25 [2021-06-05 21:00:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:33,706 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 5219 transitions. [2021-06-05 21:00:33,706 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) [2021-06-05 21:00:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 5219 transitions. [2021-06-05 21:00:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:33,708 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:33,708 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:33,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-06-05 21:00:33,708 INFO L430 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1082837443, now seen corresponding path program 660 times [2021-06-05 21:00:33,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:33,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220717242] [2021-06-05 21:00:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:33,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:33,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220717242] [2021-06-05 21:00:33,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220717242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:33,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:33,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:33,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384653747] [2021-06-05 21:00:33,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:33,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:33,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:33,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:33,809 INFO L87 Difference]: Start difference. First operand 1352 states and 5219 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:33,850 INFO L93 Difference]: Finished difference Result 2635 states and 9792 transitions. [2021-06-05 21:00:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:33,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:33,854 INFO L225 Difference]: With dead ends: 2635 [2021-06-05 21:00:33,854 INFO L226 Difference]: Without dead ends: 2208 [2021-06-05 21:00:33,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-06-05 21:00:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1243. [2021-06-05 21:00:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 3.9033816425120773) internal successors, (4848), 1242 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 4848 transitions. [2021-06-05 21:00:33,881 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 4848 transitions. Word has length 25 [2021-06-05 21:00:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:33,881 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 4848 transitions. [2021-06-05 21:00:33,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 4848 transitions. [2021-06-05 21:00:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:33,883 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:33,883 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:33,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-06-05 21:00:33,883 INFO L430 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1407215619, now seen corresponding path program 661 times [2021-06-05 21:00:33,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:33,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993444285] [2021-06-05 21:00:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:33,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:33,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993444285] [2021-06-05 21:00:33,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993444285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:33,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:33,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:33,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853546517] [2021-06-05 21:00:33,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:33,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:33,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:33,971 INFO L87 Difference]: Start difference. First operand 1243 states and 4848 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:34,030 INFO L93 Difference]: Finished difference Result 2670 states and 9925 transitions. [2021-06-05 21:00:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:34,031 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 [2021-06-05 21:00:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:34,035 INFO L225 Difference]: With dead ends: 2670 [2021-06-05 21:00:34,035 INFO L226 Difference]: Without dead ends: 2385 [2021-06-05 21:00:34,035 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-06-05 21:00:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1313. [2021-06-05 21:00:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.901676829268293) internal successors, (5119), 1312 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 5119 transitions. [2021-06-05 21:00:34,069 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 5119 transitions. Word has length 25 [2021-06-05 21:00:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:34,069 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 5119 transitions. [2021-06-05 21:00:34,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 5119 transitions. [2021-06-05 21:00:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:34,071 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:34,071 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:34,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-06-05 21:00:34,071 INFO L430 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:34,071 INFO L82 PathProgramCache]: Analyzing trace with hash -851427331, now seen corresponding path program 662 times [2021-06-05 21:00:34,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:34,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049583093] [2021-06-05 21:00:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:34,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:34,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049583093] [2021-06-05 21:00:34,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049583093] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:34,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:34,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:34,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362899263] [2021-06-05 21:00:34,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:34,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:34,155 INFO L87 Difference]: Start difference. First operand 1313 states and 5119 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:34,206 INFO L93 Difference]: Finished difference Result 2648 states and 9808 transitions. [2021-06-05 21:00:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:34,206 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 [2021-06-05 21:00:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:34,211 INFO L225 Difference]: With dead ends: 2648 [2021-06-05 21:00:34,211 INFO L226 Difference]: Without dead ends: 2349 [2021-06-05 21:00:34,211 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-06-05 21:00:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1277. [2021-06-05 21:00:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 3.903605015673981) internal successors, (4981), 1276 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 4981 transitions. [2021-06-05 21:00:34,238 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 4981 transitions. Word has length 25 [2021-06-05 21:00:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:34,238 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 4981 transitions. [2021-06-05 21:00:34,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 4981 transitions. [2021-06-05 21:00:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:34,239 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:34,239 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:34,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-06-05 21:00:34,239 INFO L430 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:34,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:34,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2024738977, now seen corresponding path program 663 times [2021-06-05 21:00:34,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:34,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367474813] [2021-06-05 21:00:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:34,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:34,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367474813] [2021-06-05 21:00:34,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367474813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:34,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:34,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:34,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492295193] [2021-06-05 21:00:34,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:34,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:34,312 INFO L87 Difference]: Start difference. First operand 1277 states and 4981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:34,362 INFO L93 Difference]: Finished difference Result 2595 states and 9589 transitions. [2021-06-05 21:00:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:34,367 INFO L225 Difference]: With dead ends: 2595 [2021-06-05 21:00:34,367 INFO L226 Difference]: Without dead ends: 2310 [2021-06-05 21:00:34,367 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:34,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-06-05 21:00:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1356. [2021-06-05 21:00:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.873062730627306) internal successors, (5248), 1355 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 5248 transitions. [2021-06-05 21:00:34,394 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 5248 transitions. Word has length 25 [2021-06-05 21:00:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:34,394 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 5248 transitions. [2021-06-05 21:00:34,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 5248 transitions. [2021-06-05 21:00:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:34,396 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:34,396 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:34,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-06-05 21:00:34,396 INFO L430 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash -741236739, now seen corresponding path program 664 times [2021-06-05 21:00:34,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:34,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110966703] [2021-06-05 21:00:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:34,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:34,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110966703] [2021-06-05 21:00:34,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110966703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:34,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:34,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:34,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705816552] [2021-06-05 21:00:34,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:34,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:34,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:34,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:34,470 INFO L87 Difference]: Start difference. First operand 1356 states and 5248 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:34,510 INFO L93 Difference]: Finished difference Result 2436 states and 9031 transitions. [2021-06-05 21:00:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:34,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:34,514 INFO L225 Difference]: With dead ends: 2436 [2021-06-05 21:00:34,514 INFO L226 Difference]: Without dead ends: 2039 [2021-06-05 21:00:34,514 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-06-05 21:00:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1277. [2021-06-05 21:00:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 3.876959247648903) internal successors, (4947), 1276 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 4947 transitions. [2021-06-05 21:00:34,540 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 4947 transitions. Word has length 25 [2021-06-05 21:00:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:34,540 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 4947 transitions. [2021-06-05 21:00:34,540 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) [2021-06-05 21:00:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 4947 transitions. [2021-06-05 21:00:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:34,541 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:34,541 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:34,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-06-05 21:00:34,541 INFO L430 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:34,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:34,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1906939901, now seen corresponding path program 665 times [2021-06-05 21:00:34,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:34,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860515138] [2021-06-05 21:00:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:34,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:34,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860515138] [2021-06-05 21:00:34,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860515138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:34,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:34,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:34,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798019042] [2021-06-05 21:00:34,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:34,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:34,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:34,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:34,620 INFO L87 Difference]: Start difference. First operand 1277 states and 4947 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:34,679 INFO L93 Difference]: Finished difference Result 2354 states and 8755 transitions. [2021-06-05 21:00:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:34,680 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 [2021-06-05 21:00:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:34,684 INFO L225 Difference]: With dead ends: 2354 [2021-06-05 21:00:34,684 INFO L226 Difference]: Without dead ends: 2091 [2021-06-05 21:00:34,684 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-06-05 21:00:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1329. [2021-06-05 21:00:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 3.8637048192771086) internal successors, (5131), 1328 states have internal predecessors, (5131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 5131 transitions. [2021-06-05 21:00:34,710 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 5131 transitions. Word has length 25 [2021-06-05 21:00:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:34,710 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 5131 transitions. [2021-06-05 21:00:34,710 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) [2021-06-05 21:00:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 5131 transitions. [2021-06-05 21:00:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:34,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:34,711 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:34,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-06-05 21:00:34,712 INFO L430 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2125291487, now seen corresponding path program 666 times [2021-06-05 21:00:34,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:34,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240150936] [2021-06-05 21:00:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:34,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:34,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240150936] [2021-06-05 21:00:34,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240150936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:34,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:34,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:34,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175551993] [2021-06-05 21:00:34,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:34,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:34,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:34,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:34,797 INFO L87 Difference]: Start difference. First operand 1329 states and 5131 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:34,841 INFO L93 Difference]: Finished difference Result 2090 states and 7818 transitions. [2021-06-05 21:00:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:34,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:34,844 INFO L225 Difference]: With dead ends: 2090 [2021-06-05 21:00:34,844 INFO L226 Difference]: Without dead ends: 1686 [2021-06-05 21:00:34,844 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2021-06-05 21:00:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1243. [2021-06-05 21:00:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 3.889694041867955) internal successors, (4831), 1242 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 4831 transitions. [2021-06-05 21:00:34,868 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 4831 transitions. Word has length 25 [2021-06-05 21:00:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:34,868 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 4831 transitions. [2021-06-05 21:00:34,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 4831 transitions. [2021-06-05 21:00:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:34,870 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:34,870 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:34,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-06-05 21:00:34,870 INFO L430 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:34,870 INFO L82 PathProgramCache]: Analyzing trace with hash -434819109, now seen corresponding path program 667 times [2021-06-05 21:00:34,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:34,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558485353] [2021-06-05 21:00:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:34,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:34,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558485353] [2021-06-05 21:00:34,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558485353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:34,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:34,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:34,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668246200] [2021-06-05 21:00:34,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:34,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:34,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:34,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:34,939 INFO L87 Difference]: Start difference. First operand 1243 states and 4831 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:35,016 INFO L93 Difference]: Finished difference Result 2641 states and 9819 transitions. [2021-06-05 21:00:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:35,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:35,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:35,021 INFO L225 Difference]: With dead ends: 2641 [2021-06-05 21:00:35,021 INFO L226 Difference]: Without dead ends: 2358 [2021-06-05 21:00:35,022 INFO L810 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 [2021-06-05 21:00:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-06-05 21:00:35,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1305. [2021-06-05 21:00:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1304 states have (on average 3.8911042944785277) internal successors, (5074), 1304 states have internal predecessors, (5074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 5074 transitions. [2021-06-05 21:00:35,052 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 5074 transitions. Word has length 25 [2021-06-05 21:00:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:35,052 INFO L482 AbstractCegarLoop]: Abstraction has 1305 states and 5074 transitions. [2021-06-05 21:00:35,052 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) [2021-06-05 21:00:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 5074 transitions. [2021-06-05 21:00:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:35,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:35,053 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:35,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-06-05 21:00:35,053 INFO L430 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:35,054 INFO L82 PathProgramCache]: Analyzing trace with hash -641627075, now seen corresponding path program 668 times [2021-06-05 21:00:35,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:35,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133998657] [2021-06-05 21:00:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:35,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:35,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133998657] [2021-06-05 21:00:35,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133998657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:35,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:35,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:35,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682956664] [2021-06-05 21:00:35,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:35,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:35,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:35,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:35,118 INFO L87 Difference]: Start difference. First operand 1305 states and 5074 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:35,183 INFO L93 Difference]: Finished difference Result 2621 states and 9707 transitions. [2021-06-05 21:00:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:35,187 INFO L225 Difference]: With dead ends: 2621 [2021-06-05 21:00:35,188 INFO L226 Difference]: Without dead ends: 2322 [2021-06-05 21:00:35,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-06-05 21:00:35,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1269. [2021-06-05 21:00:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 3.892744479495268) internal successors, (4936), 1268 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 4936 transitions. [2021-06-05 21:00:35,215 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 4936 transitions. Word has length 25 [2021-06-05 21:00:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:35,215 INFO L482 AbstractCegarLoop]: Abstraction has 1269 states and 4936 transitions. [2021-06-05 21:00:35,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 4936 transitions. [2021-06-05 21:00:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:35,217 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:35,217 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:35,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-06-05 21:00:35,217 INFO L430 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:35,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:35,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1052342467, now seen corresponding path program 669 times [2021-06-05 21:00:35,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:35,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288857387] [2021-06-05 21:00:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:35,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:35,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288857387] [2021-06-05 21:00:35,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288857387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:35,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:35,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:35,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696147990] [2021-06-05 21:00:35,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:35,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:35,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:35,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:35,282 INFO L87 Difference]: Start difference. First operand 1269 states and 4936 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:35,331 INFO L93 Difference]: Finished difference Result 2568 states and 9488 transitions. [2021-06-05 21:00:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:35,335 INFO L225 Difference]: With dead ends: 2568 [2021-06-05 21:00:35,335 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 21:00:35,336 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 21:00:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1331. [2021-06-05 21:00:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 3.874436090225564) internal successors, (5153), 1330 states have internal predecessors, (5153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 5153 transitions. [2021-06-05 21:00:35,363 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 5153 transitions. Word has length 25 [2021-06-05 21:00:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:35,363 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 5153 transitions. [2021-06-05 21:00:35,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 5153 transitions. [2021-06-05 21:00:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:35,365 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:35,365 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:35,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-06-05 21:00:35,365 INFO L430 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1570441539, now seen corresponding path program 670 times [2021-06-05 21:00:35,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:35,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073502751] [2021-06-05 21:00:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:35,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:35,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073502751] [2021-06-05 21:00:35,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073502751] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:35,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:35,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:35,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735732595] [2021-06-05 21:00:35,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:35,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:35,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:35,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:35,443 INFO L87 Difference]: Start difference. First operand 1331 states and 5153 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:35,492 INFO L93 Difference]: Finished difference Result 2411 states and 8936 transitions. [2021-06-05 21:00:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:35,496 INFO L225 Difference]: With dead ends: 2411 [2021-06-05 21:00:35,497 INFO L226 Difference]: Without dead ends: 2031 [2021-06-05 21:00:35,497 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-06-05 21:00:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1269. [2021-06-05 21:00:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 3.8722397476340693) internal successors, (4910), 1268 states have internal predecessors, (4910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 4910 transitions. [2021-06-05 21:00:35,523 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 4910 transitions. Word has length 25 [2021-06-05 21:00:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:35,523 INFO L482 AbstractCegarLoop]: Abstraction has 1269 states and 4910 transitions. [2021-06-05 21:00:35,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 4910 transitions. [2021-06-05 21:00:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:35,525 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:35,525 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:35,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-06-05 21:00:35,525 INFO L430 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:35,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:35,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1649701535, now seen corresponding path program 671 times [2021-06-05 21:00:35,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:35,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196688481] [2021-06-05 21:00:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:35,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:35,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196688481] [2021-06-05 21:00:35,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196688481] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:35,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:35,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:35,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132973649] [2021-06-05 21:00:35,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:35,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:35,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:35,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:35,630 INFO L87 Difference]: Start difference. First operand 1269 states and 4910 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:35,701 INFO L93 Difference]: Finished difference Result 2346 states and 8718 transitions. [2021-06-05 21:00:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:35,705 INFO L225 Difference]: With dead ends: 2346 [2021-06-05 21:00:35,706 INFO L226 Difference]: Without dead ends: 2083 [2021-06-05 21:00:35,706 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-06-05 21:00:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1321. [2021-06-05 21:00:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.859090909090909) internal successors, (5094), 1320 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 5094 transitions. [2021-06-05 21:00:35,732 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 5094 transitions. Word has length 25 [2021-06-05 21:00:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:35,732 INFO L482 AbstractCegarLoop]: Abstraction has 1321 states and 5094 transitions. [2021-06-05 21:00:35,732 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) [2021-06-05 21:00:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 5094 transitions. [2021-06-05 21:00:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:35,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:35,734 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:35,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-06-05 21:00:35,734 INFO L430 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash -171333891, now seen corresponding path program 672 times [2021-06-05 21:00:35,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:35,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404359355] [2021-06-05 21:00:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:35,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:35,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404359355] [2021-06-05 21:00:35,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404359355] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:35,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:35,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:35,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199834332] [2021-06-05 21:00:35,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:35,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:35,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:35,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:35,814 INFO L87 Difference]: Start difference. First operand 1321 states and 5094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:35,872 INFO L93 Difference]: Finished difference Result 2082 states and 7781 transitions. [2021-06-05 21:00:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:35,876 INFO L225 Difference]: With dead ends: 2082 [2021-06-05 21:00:35,876 INFO L226 Difference]: Without dead ends: 1665 [2021-06-05 21:00:35,876 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-06-05 21:00:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1222. [2021-06-05 21:00:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.909090909090909) internal successors, (4773), 1221 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4773 transitions. [2021-06-05 21:00:35,900 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4773 transitions. Word has length 25 [2021-06-05 21:00:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:35,900 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4773 transitions. [2021-06-05 21:00:35,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4773 transitions. [2021-06-05 21:00:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:35,901 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:35,901 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:35,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-06-05 21:00:35,901 INFO L430 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:35,902 INFO L82 PathProgramCache]: Analyzing trace with hash 739430491, now seen corresponding path program 673 times [2021-06-05 21:00:35,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:35,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453077503] [2021-06-05 21:00:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:35,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:35,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453077503] [2021-06-05 21:00:35,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453077503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:35,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:35,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:35,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932510200] [2021-06-05 21:00:35,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:35,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:35,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:35,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:35,987 INFO L87 Difference]: Start difference. First operand 1222 states and 4773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:36,044 INFO L93 Difference]: Finished difference Result 2413 states and 8886 transitions. [2021-06-05 21:00:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:36,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:36,049 INFO L225 Difference]: With dead ends: 2413 [2021-06-05 21:00:36,049 INFO L226 Difference]: Without dead ends: 2128 [2021-06-05 21:00:36,049 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-06-05 21:00:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1250. [2021-06-05 21:00:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.8919135308246595) internal successors, (4861), 1249 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4861 transitions. [2021-06-05 21:00:36,077 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4861 transitions. Word has length 25 [2021-06-05 21:00:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:36,077 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4861 transitions. [2021-06-05 21:00:36,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4861 transitions. [2021-06-05 21:00:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:36,078 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:36,078 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:36,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-06-05 21:00:36,079 INFO L430 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1931896923, now seen corresponding path program 674 times [2021-06-05 21:00:36,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:36,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440600657] [2021-06-05 21:00:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:36,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:36,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440600657] [2021-06-05 21:00:36,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440600657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:36,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:36,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:36,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984254199] [2021-06-05 21:00:36,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:36,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:36,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:36,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:36,149 INFO L87 Difference]: Start difference. First operand 1250 states and 4861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:36,206 INFO L93 Difference]: Finished difference Result 2375 states and 8705 transitions. [2021-06-05 21:00:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:36,206 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 [2021-06-05 21:00:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:36,210 INFO L225 Difference]: With dead ends: 2375 [2021-06-05 21:00:36,210 INFO L226 Difference]: Without dead ends: 2100 [2021-06-05 21:00:36,211 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-06-05 21:00:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1222. [2021-06-05 21:00:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8992628992628995) internal successors, (4761), 1221 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4761 transitions. [2021-06-05 21:00:36,237 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4761 transitions. Word has length 25 [2021-06-05 21:00:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:36,237 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4761 transitions. [2021-06-05 21:00:36,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4761 transitions. [2021-06-05 21:00:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:36,239 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:36,239 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:36,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-06-05 21:00:36,239 INFO L430 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash 258528445, now seen corresponding path program 675 times [2021-06-05 21:00:36,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:36,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935470679] [2021-06-05 21:00:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:36,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:36,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935470679] [2021-06-05 21:00:36,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935470679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:36,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:36,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:36,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900405236] [2021-06-05 21:00:36,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:36,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:36,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:36,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:36,319 INFO L87 Difference]: Start difference. First operand 1222 states and 4761 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:36,387 INFO L93 Difference]: Finished difference Result 2437 states and 8986 transitions. [2021-06-05 21:00:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:36,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:36,391 INFO L225 Difference]: With dead ends: 2437 [2021-06-05 21:00:36,391 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 21:00:36,391 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 21:00:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1258. [2021-06-05 21:00:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.883054892601432) internal successors, (4881), 1257 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4881 transitions. [2021-06-05 21:00:36,418 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4881 transitions. Word has length 25 [2021-06-05 21:00:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:36,418 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4881 transitions. [2021-06-05 21:00:36,418 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) [2021-06-05 21:00:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4881 transitions. [2021-06-05 21:00:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:36,419 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:36,419 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:36,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-06-05 21:00:36,420 INFO L430 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:36,420 INFO L82 PathProgramCache]: Analyzing trace with hash -667121573, now seen corresponding path program 676 times [2021-06-05 21:00:36,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:36,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804642615] [2021-06-05 21:00:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:36,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:36,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804642615] [2021-06-05 21:00:36,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804642615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:36,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:36,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:36,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566865648] [2021-06-05 21:00:36,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:36,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:36,495 INFO L87 Difference]: Start difference. First operand 1258 states and 4881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:36,546 INFO L93 Difference]: Finished difference Result 2415 states and 8869 transitions. [2021-06-05 21:00:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:36,546 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 [2021-06-05 21:00:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:36,550 INFO L225 Difference]: With dead ends: 2415 [2021-06-05 21:00:36,550 INFO L226 Difference]: Without dead ends: 2116 [2021-06-05 21:00:36,550 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2021-06-05 21:00:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1222. [2021-06-05 21:00:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8894348894348894) internal successors, (4749), 1221 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4749 transitions. [2021-06-05 21:00:36,575 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4749 transitions. Word has length 25 [2021-06-05 21:00:36,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:36,575 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4749 transitions. [2021-06-05 21:00:36,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4749 transitions. [2021-06-05 21:00:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:36,576 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:36,576 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:36,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-06-05 21:00:36,577 INFO L430 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -826470309, now seen corresponding path program 677 times [2021-06-05 21:00:36,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:36,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610751665] [2021-06-05 21:00:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:36,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:36,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610751665] [2021-06-05 21:00:36,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610751665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:36,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:36,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:36,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658829206] [2021-06-05 21:00:36,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:36,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:36,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:36,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:36,645 INFO L87 Difference]: Start difference. First operand 1222 states and 4749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:36,699 INFO L93 Difference]: Finished difference Result 2349 states and 8612 transitions. [2021-06-05 21:00:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:36,700 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 [2021-06-05 21:00:36,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:36,704 INFO L225 Difference]: With dead ends: 2349 [2021-06-05 21:00:36,704 INFO L226 Difference]: Without dead ends: 2102 [2021-06-05 21:00:36,704 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-06-05 21:00:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1246. [2021-06-05 21:00:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.8755020080321283) internal successors, (4825), 1245 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4825 transitions. [2021-06-05 21:00:36,730 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4825 transitions. Word has length 25 [2021-06-05 21:00:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:36,730 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4825 transitions. [2021-06-05 21:00:36,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4825 transitions. [2021-06-05 21:00:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:36,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:36,732 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:36,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-06-05 21:00:36,732 INFO L430 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash 254592317, now seen corresponding path program 678 times [2021-06-05 21:00:36,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:36,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167433867] [2021-06-05 21:00:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:36,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:36,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167433867] [2021-06-05 21:00:36,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167433867] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:36,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:36,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:36,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230597135] [2021-06-05 21:00:36,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:36,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:36,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:36,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:36,820 INFO L87 Difference]: Start difference. First operand 1246 states and 4825 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:36,887 INFO L93 Difference]: Finished difference Result 2365 states and 8660 transitions. [2021-06-05 21:00:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:36,887 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 [2021-06-05 21:00:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:36,891 INFO L225 Difference]: With dead ends: 2365 [2021-06-05 21:00:36,891 INFO L226 Difference]: Without dead ends: 2066 [2021-06-05 21:00:36,891 INFO L810 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 [2021-06-05 21:00:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-06-05 21:00:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1210. [2021-06-05 21:00:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8966087675765095) internal successors, (4711), 1209 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4711 transitions. [2021-06-05 21:00:36,918 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4711 transitions. Word has length 25 [2021-06-05 21:00:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:36,918 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4711 transitions. [2021-06-05 21:00:36,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4711 transitions. [2021-06-05 21:00:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:36,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:36,920 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:36,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-06-05 21:00:36,920 INFO L430 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash 4970301, now seen corresponding path program 679 times [2021-06-05 21:00:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:36,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582729430] [2021-06-05 21:00:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:36,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:36,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582729430] [2021-06-05 21:00:36,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582729430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:36,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:36,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:36,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345955884] [2021-06-05 21:00:36,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:36,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:36,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:36,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:36,997 INFO L87 Difference]: Start difference. First operand 1210 states and 4711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:37,052 INFO L93 Difference]: Finished difference Result 2448 states and 8983 transitions. [2021-06-05 21:00:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:37,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:37,056 INFO L225 Difference]: With dead ends: 2448 [2021-06-05 21:00:37,056 INFO L226 Difference]: Without dead ends: 2163 [2021-06-05 21:00:37,056 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-06-05 21:00:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1210. [2021-06-05 21:00:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8734491315136474) internal successors, (4683), 1209 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4683 transitions. [2021-06-05 21:00:37,081 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4683 transitions. Word has length 25 [2021-06-05 21:00:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:37,082 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4683 transitions. [2021-06-05 21:00:37,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4683 transitions. [2021-06-05 21:00:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:37,083 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:37,083 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:37,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-06-05 21:00:37,083 INFO L430 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:37,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1197436733, now seen corresponding path program 680 times [2021-06-05 21:00:37,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:37,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312683830] [2021-06-05 21:00:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:37,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:37,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312683830] [2021-06-05 21:00:37,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312683830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:37,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:37,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:37,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226905708] [2021-06-05 21:00:37,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:37,164 INFO L87 Difference]: Start difference. First operand 1210 states and 4683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:37,213 INFO L93 Difference]: Finished difference Result 2410 states and 8802 transitions. [2021-06-05 21:00:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:37,217 INFO L225 Difference]: With dead ends: 2410 [2021-06-05 21:00:37,217 INFO L226 Difference]: Without dead ends: 2135 [2021-06-05 21:00:37,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2021-06-05 21:00:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1182. [2021-06-05 21:00:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.8789161727349706) internal successors, (4581), 1181 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4581 transitions. [2021-06-05 21:00:37,242 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4581 transitions. Word has length 25 [2021-06-05 21:00:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:37,242 INFO L482 AbstractCegarLoop]: Abstraction has 1182 states and 4581 transitions. [2021-06-05 21:00:37,242 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) [2021-06-05 21:00:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4581 transitions. [2021-06-05 21:00:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:37,244 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:37,244 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:37,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-06-05 21:00:37,244 INFO L430 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1021026109, now seen corresponding path program 681 times [2021-06-05 21:00:37,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:37,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536469163] [2021-06-05 21:00:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:37,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:37,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536469163] [2021-06-05 21:00:37,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536469163] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:37,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:37,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:37,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922473846] [2021-06-05 21:00:37,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:37,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:37,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:37,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:37,311 INFO L87 Difference]: Start difference. First operand 1182 states and 4581 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:37,360 INFO L93 Difference]: Finished difference Result 2476 states and 9077 transitions. [2021-06-05 21:00:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:37,365 INFO L225 Difference]: With dead ends: 2476 [2021-06-05 21:00:37,365 INFO L226 Difference]: Without dead ends: 2191 [2021-06-05 21:00:37,365 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2021-06-05 21:00:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1261. [2021-06-05 21:00:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1260 states have (on average 3.8476190476190477) internal successors, (4848), 1260 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 4848 transitions. [2021-06-05 21:00:37,390 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 4848 transitions. Word has length 25 [2021-06-05 21:00:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:37,390 INFO L482 AbstractCegarLoop]: Abstraction has 1261 states and 4848 transitions. [2021-06-05 21:00:37,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 4848 transitions. [2021-06-05 21:00:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:37,392 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:37,392 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:37,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-06-05 21:00:37,392 INFO L430 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:37,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1035245659, now seen corresponding path program 682 times [2021-06-05 21:00:37,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:37,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684903789] [2021-06-05 21:00:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:37,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:37,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684903789] [2021-06-05 21:00:37,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684903789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:37,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:37,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:37,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410021604] [2021-06-05 21:00:37,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:37,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:37,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:37,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:37,481 INFO L87 Difference]: Start difference. First operand 1261 states and 4848 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:37,521 INFO L93 Difference]: Finished difference Result 2317 states and 8519 transitions. [2021-06-05 21:00:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:37,525 INFO L225 Difference]: With dead ends: 2317 [2021-06-05 21:00:37,525 INFO L226 Difference]: Without dead ends: 1920 [2021-06-05 21:00:37,525 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-06-05 21:00:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1182. [2021-06-05 21:00:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.8535139712108384) internal successors, (4551), 1181 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4551 transitions. [2021-06-05 21:00:37,549 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4551 transitions. Word has length 25 [2021-06-05 21:00:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:37,549 INFO L482 AbstractCegarLoop]: Abstraction has 1182 states and 4551 transitions. [2021-06-05 21:00:37,549 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) [2021-06-05 21:00:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4551 transitions. [2021-06-05 21:00:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:37,550 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:37,550 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:37,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-06-05 21:00:37,550 INFO L430 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:37,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1987473499, now seen corresponding path program 683 times [2021-06-05 21:00:37,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:37,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357523099] [2021-06-05 21:00:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:37,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:37,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357523099] [2021-06-05 21:00:37,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357523099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:37,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:37,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:37,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740367266] [2021-06-05 21:00:37,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:37,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:37,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:37,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:37,632 INFO L87 Difference]: Start difference. First operand 1182 states and 4551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:37,681 INFO L93 Difference]: Finished difference Result 2403 states and 8760 transitions. [2021-06-05 21:00:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:37,685 INFO L225 Difference]: With dead ends: 2403 [2021-06-05 21:00:37,685 INFO L226 Difference]: Without dead ends: 2156 [2021-06-05 21:00:37,685 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-06-05 21:00:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1226. [2021-06-05 21:00:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.8391836734693876) internal successors, (4703), 1225 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4703 transitions. [2021-06-05 21:00:37,710 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4703 transitions. Word has length 25 [2021-06-05 21:00:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:37,710 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4703 transitions. [2021-06-05 21:00:37,710 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) [2021-06-05 21:00:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4703 transitions. [2021-06-05 21:00:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:37,712 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:37,712 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:37,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-06-05 21:00:37,712 INFO L430 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:37,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:37,712 INFO L82 PathProgramCache]: Analyzing trace with hash 917954493, now seen corresponding path program 684 times [2021-06-05 21:00:37,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:37,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124477069] [2021-06-05 21:00:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:37,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:37,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124477069] [2021-06-05 21:00:37,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124477069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:37,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:37,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:37,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146339501] [2021-06-05 21:00:37,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:37,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:37,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:37,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:37,785 INFO L87 Difference]: Start difference. First operand 1226 states and 4703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:37,834 INFO L93 Difference]: Finished difference Result 2282 states and 8374 transitions. [2021-06-05 21:00:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:37,838 INFO L225 Difference]: With dead ends: 2282 [2021-06-05 21:00:37,838 INFO L226 Difference]: Without dead ends: 1890 [2021-06-05 21:00:37,838 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-06-05 21:00:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1152. [2021-06-05 21:00:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.8679409209383144) internal successors, (4452), 1151 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4452 transitions. [2021-06-05 21:00:37,863 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4452 transitions. Word has length 25 [2021-06-05 21:00:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:37,863 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 4452 transitions. [2021-06-05 21:00:37,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:37,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4452 transitions. [2021-06-05 21:00:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:37,865 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:37,865 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:37,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-06-05 21:00:37,865 INFO L430 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:37,865 INFO L82 PathProgramCache]: Analyzing trace with hash -784415969, now seen corresponding path program 685 times [2021-06-05 21:00:37,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:37,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423371374] [2021-06-05 21:00:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:37,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:37,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423371374] [2021-06-05 21:00:37,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423371374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:37,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:37,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:37,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890973996] [2021-06-05 21:00:37,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:37,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:37,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:37,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:37,948 INFO L87 Difference]: Start difference. First operand 1152 states and 4452 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,002 INFO L93 Difference]: Finished difference Result 2336 states and 8551 transitions. [2021-06-05 21:00:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,006 INFO L225 Difference]: With dead ends: 2336 [2021-06-05 21:00:38,006 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 21:00:38,006 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:38,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 21:00:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1152. [2021-06-05 21:00:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.8366637706342313) internal successors, (4416), 1151 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4416 transitions. [2021-06-05 21:00:38,030 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4416 transitions. Word has length 25 [2021-06-05 21:00:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,030 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 4416 transitions. [2021-06-05 21:00:38,030 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) [2021-06-05 21:00:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4416 transitions. [2021-06-05 21:00:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,032 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-06-05 21:00:38,032 INFO L430 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1710065987, now seen corresponding path program 686 times [2021-06-05 21:00:38,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912338632] [2021-06-05 21:00:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:38,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:38,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912338632] [2021-06-05 21:00:38,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912338632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:38,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:38,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:38,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883893714] [2021-06-05 21:00:38,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:38,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:38,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:38,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:38,129 INFO L87 Difference]: Start difference. First operand 1152 states and 4416 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,184 INFO L93 Difference]: Finished difference Result 2314 states and 8434 transitions. [2021-06-05 21:00:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,188 INFO L225 Difference]: With dead ends: 2314 [2021-06-05 21:00:38,188 INFO L226 Difference]: Without dead ends: 2015 [2021-06-05 21:00:38,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-06-05 21:00:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1116. [2021-06-05 21:00:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 3.8367713004484303) internal successors, (4278), 1115 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 4278 transitions. [2021-06-05 21:00:38,212 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 4278 transitions. Word has length 25 [2021-06-05 21:00:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,212 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 4278 transitions. [2021-06-05 21:00:38,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 4278 transitions. [2021-06-05 21:00:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,213 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-06-05 21:00:38,213 INFO L430 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1547196413, now seen corresponding path program 687 times [2021-06-05 21:00:38,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868264177] [2021-06-05 21:00:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:38,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:38,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868264177] [2021-06-05 21:00:38,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868264177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:38,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:38,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:38,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531735795] [2021-06-05 21:00:38,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:38,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:38,318 INFO L87 Difference]: Start difference. First operand 1116 states and 4278 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,368 INFO L93 Difference]: Finished difference Result 2261 states and 8215 transitions. [2021-06-05 21:00:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,368 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 [2021-06-05 21:00:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,372 INFO L225 Difference]: With dead ends: 2261 [2021-06-05 21:00:38,372 INFO L226 Difference]: Without dead ends: 1976 [2021-06-05 21:00:38,372 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-06-05 21:00:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1022. [2021-06-05 21:00:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 3.7943192948090108) internal successors, (3874), 1021 states have internal predecessors, (3874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 3874 transitions. [2021-06-05 21:00:38,393 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 3874 transitions. Word has length 25 [2021-06-05 21:00:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,393 INFO L482 AbstractCegarLoop]: Abstraction has 1022 states and 3874 transitions. [2021-06-05 21:00:38,393 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) [2021-06-05 21:00:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 3874 transitions. [2021-06-05 21:00:38,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,394 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-06-05 21:00:38,394 INFO L430 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1550119875, now seen corresponding path program 688 times [2021-06-05 21:00:38,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727078196] [2021-06-05 21:00:38,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:38,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:38,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727078196] [2021-06-05 21:00:38,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727078196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:38,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:38,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:38,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651729085] [2021-06-05 21:00:38,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:38,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:38,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:38,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:38,471 INFO L87 Difference]: Start difference. First operand 1022 states and 3874 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,511 INFO L93 Difference]: Finished difference Result 2102 states and 7657 transitions. [2021-06-05 21:00:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,511 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 [2021-06-05 21:00:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,514 INFO L225 Difference]: With dead ends: 2102 [2021-06-05 21:00:38,514 INFO L226 Difference]: Without dead ends: 1705 [2021-06-05 21:00:38,514 INFO L810 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 [2021-06-05 21:00:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-06-05 21:00:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 943. [2021-06-05 21:00:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 3.7929936305732483) internal successors, (3573), 942 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 3573 transitions. [2021-06-05 21:00:38,532 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 3573 transitions. Word has length 25 [2021-06-05 21:00:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,532 INFO L482 AbstractCegarLoop]: Abstraction has 943 states and 3573 transitions. [2021-06-05 21:00:38,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 3573 transitions. [2021-06-05 21:00:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,534 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,534 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-06-05 21:00:38,534 INFO L430 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,534 INFO L82 PathProgramCache]: Analyzing trace with hash -929980325, now seen corresponding path program 689 times [2021-06-05 21:00:38,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792814541] [2021-06-05 21:00:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:38,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:38,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792814541] [2021-06-05 21:00:38,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792814541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:38,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:38,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:38,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741274519] [2021-06-05 21:00:38,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:38,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:38,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:38,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:38,635 INFO L87 Difference]: Start difference. First operand 943 states and 3573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,687 INFO L93 Difference]: Finished difference Result 2020 states and 7381 transitions. [2021-06-05 21:00:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,691 INFO L225 Difference]: With dead ends: 2020 [2021-06-05 21:00:38,691 INFO L226 Difference]: Without dead ends: 1757 [2021-06-05 21:00:38,691 INFO L810 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 [2021-06-05 21:00:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-06-05 21:00:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 995. [2021-06-05 21:00:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 3.7796780684104627) internal successors, (3757), 994 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 3757 transitions. [2021-06-05 21:00:38,711 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 3757 transitions. Word has length 25 [2021-06-05 21:00:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,711 INFO L482 AbstractCegarLoop]: Abstraction has 995 states and 3757 transitions. [2021-06-05 21:00:38,711 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) [2021-06-05 21:00:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 3757 transitions. [2021-06-05 21:00:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,713 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,713 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-06-05 21:00:38,713 INFO L430 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,713 INFO L82 PathProgramCache]: Analyzing trace with hash -711628739, now seen corresponding path program 690 times [2021-06-05 21:00:38,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771227542] [2021-06-05 21:00:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:38,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:38,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771227542] [2021-06-05 21:00:38,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771227542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:38,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:38,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:38,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419637334] [2021-06-05 21:00:38,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:38,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:38,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:38,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:38,794 INFO L87 Difference]: Start difference. First operand 995 states and 3757 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,831 INFO L93 Difference]: Finished difference Result 1756 states and 6444 transitions. [2021-06-05 21:00:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,834 INFO L225 Difference]: With dead ends: 1756 [2021-06-05 21:00:38,834 INFO L226 Difference]: Without dead ends: 1352 [2021-06-05 21:00:38,834 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-06-05 21:00:38,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 909. [2021-06-05 21:00:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 3.8105726872246697) internal successors, (3460), 908 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 3460 transitions. [2021-06-05 21:00:38,851 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 3460 transitions. Word has length 25 [2021-06-05 21:00:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,851 INFO L482 AbstractCegarLoop]: Abstraction has 909 states and 3460 transitions. [2021-06-05 21:00:38,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 3460 transitions. [2021-06-05 21:00:38,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,852 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,852 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-06-05 21:00:38,852 INFO L430 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -30381989, now seen corresponding path program 691 times [2021-06-05 21:00:38,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23180544] [2021-06-05 21:00:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:38,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:38,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23180544] [2021-06-05 21:00:38,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23180544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:38,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:38,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:38,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784753698] [2021-06-05 21:00:38,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:38,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:38,922 INFO L87 Difference]: Start difference. First operand 909 states and 3460 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:38,971 INFO L93 Difference]: Finished difference Result 1935 states and 7081 transitions. [2021-06-05 21:00:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:38,974 INFO L225 Difference]: With dead ends: 1935 [2021-06-05 21:00:38,974 INFO L226 Difference]: Without dead ends: 1688 [2021-06-05 21:00:38,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-06-05 21:00:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 953. [2021-06-05 21:00:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 3.810924369747899) internal successors, (3628), 952 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 3628 transitions. [2021-06-05 21:00:38,993 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 3628 transitions. Word has length 25 [2021-06-05 21:00:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:38,993 INFO L482 AbstractCegarLoop]: Abstraction has 953 states and 3628 transitions. [2021-06-05 21:00:38,993 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) [2021-06-05 21:00:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 3628 transitions. [2021-06-05 21:00:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:38,994 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:38,994 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:38,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-06-05 21:00:38,994 INFO L430 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1050680637, now seen corresponding path program 692 times [2021-06-05 21:00:38,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:38,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184330090] [2021-06-05 21:00:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184330090] [2021-06-05 21:00:39,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184330090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669311555] [2021-06-05 21:00:39,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,076 INFO L87 Difference]: Start difference. First operand 953 states and 3628 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,127 INFO L93 Difference]: Finished difference Result 1951 states and 7129 transitions. [2021-06-05 21:00:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,130 INFO L225 Difference]: With dead ends: 1951 [2021-06-05 21:00:39,130 INFO L226 Difference]: Without dead ends: 1664 [2021-06-05 21:00:39,131 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-06-05 21:00:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 929. [2021-06-05 21:00:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 3.814655172413793) internal successors, (3540), 928 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3540 transitions. [2021-06-05 21:00:39,149 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3540 transitions. Word has length 25 [2021-06-05 21:00:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:39,149 INFO L482 AbstractCegarLoop]: Abstraction has 929 states and 3540 transitions. [2021-06-05 21:00:39,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3540 transitions. [2021-06-05 21:00:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:39,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:39,150 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:39,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-06-05 21:00:39,150 INFO L430 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:39,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:39,150 INFO L82 PathProgramCache]: Analyzing trace with hash -647905347, now seen corresponding path program 693 times [2021-06-05 21:00:39,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:39,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157933458] [2021-06-05 21:00:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157933458] [2021-06-05 21:00:39,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157933458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709251748] [2021-06-05 21:00:39,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,231 INFO L87 Difference]: Start difference. First operand 929 states and 3540 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,278 INFO L93 Difference]: Finished difference Result 1855 states and 6765 transitions. [2021-06-05 21:00:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,279 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 [2021-06-05 21:00:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,282 INFO L225 Difference]: With dead ends: 1855 [2021-06-05 21:00:39,282 INFO L226 Difference]: Without dead ends: 1608 [2021-06-05 21:00:39,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-06-05 21:00:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 973. [2021-06-05 21:00:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 3.7983539094650207) internal successors, (3692), 972 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 3692 transitions. [2021-06-05 21:00:39,299 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 3692 transitions. Word has length 25 [2021-06-05 21:00:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:39,300 INFO L482 AbstractCegarLoop]: Abstraction has 973 states and 3692 transitions. [2021-06-05 21:00:39,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 3692 transitions. [2021-06-05 21:00:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:39,301 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:39,301 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:39,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-06-05 21:00:39,301 INFO L430 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 121866173, now seen corresponding path program 694 times [2021-06-05 21:00:39,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:39,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234380578] [2021-06-05 21:00:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234380578] [2021-06-05 21:00:39,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234380578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209990726] [2021-06-05 21:00:39,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,380 INFO L87 Difference]: Start difference. First operand 973 states and 3692 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,421 INFO L93 Difference]: Finished difference Result 1734 states and 6379 transitions. [2021-06-05 21:00:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,423 INFO L225 Difference]: With dead ends: 1734 [2021-06-05 21:00:39,423 INFO L226 Difference]: Without dead ends: 1372 [2021-06-05 21:00:39,423 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-06-05 21:00:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 929. [2021-06-05 21:00:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 3.793103448275862) internal successors, (3520), 928 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3520 transitions. [2021-06-05 21:00:39,440 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3520 transitions. Word has length 25 [2021-06-05 21:00:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:39,440 INFO L482 AbstractCegarLoop]: Abstraction has 929 states and 3520 transitions. [2021-06-05 21:00:39,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3520 transitions. [2021-06-05 21:00:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:39,441 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:39,441 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:39,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-06-05 21:00:39,441 INFO L430 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:39,442 INFO L82 PathProgramCache]: Analyzing trace with hash -259900385, now seen corresponding path program 695 times [2021-06-05 21:00:39,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:39,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635574703] [2021-06-05 21:00:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635574703] [2021-06-05 21:00:39,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635574703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971783614] [2021-06-05 21:00:39,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,520 INFO L87 Difference]: Start difference. First operand 929 states and 3520 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,569 INFO L93 Difference]: Finished difference Result 1563 states and 5736 transitions. [2021-06-05 21:00:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,570 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 [2021-06-05 21:00:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,572 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 21:00:39,572 INFO L226 Difference]: Without dead ends: 1300 [2021-06-05 21:00:39,572 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-06-05 21:00:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 981. [2021-06-05 21:00:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 3.779591836734694) internal successors, (3704), 980 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 3704 transitions. [2021-06-05 21:00:39,589 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 3704 transitions. Word has length 25 [2021-06-05 21:00:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:39,589 INFO L482 AbstractCegarLoop]: Abstraction has 981 states and 3704 transitions. [2021-06-05 21:00:39,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 3704 transitions. [2021-06-05 21:00:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:39,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:39,590 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:39,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-06-05 21:00:39,590 INFO L430 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:39,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2080935811, now seen corresponding path program 696 times [2021-06-05 21:00:39,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:39,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192185446] [2021-06-05 21:00:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192185446] [2021-06-05 21:00:39,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192185446] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873357697] [2021-06-05 21:00:39,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,682 INFO L87 Difference]: Start difference. First operand 981 states and 3704 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,720 INFO L93 Difference]: Finished difference Result 1299 states and 4799 transitions. [2021-06-05 21:00:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,722 INFO L225 Difference]: With dead ends: 1299 [2021-06-05 21:00:39,722 INFO L226 Difference]: Without dead ends: 895 [2021-06-05 21:00:39,722 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-06-05 21:00:39,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-06-05 21:00:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.825503355704698) internal successors, (3420), 894 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3420 transitions. [2021-06-05 21:00:39,735 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3420 transitions. Word has length 25 [2021-06-05 21:00:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:39,736 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 3420 transitions. [2021-06-05 21:00:39,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,736 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3420 transitions. [2021-06-05 21:00:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:39,737 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:39,737 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:39,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-06-05 21:00:39,737 INFO L430 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:39,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:39,737 INFO L82 PathProgramCache]: Analyzing trace with hash 738750649, now seen corresponding path program 697 times [2021-06-05 21:00:39,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:39,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129248517] [2021-06-05 21:00:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129248517] [2021-06-05 21:00:39,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129248517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656658620] [2021-06-05 21:00:39,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,804 INFO L87 Difference]: Start difference. First operand 895 states and 3420 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,853 INFO L93 Difference]: Finished difference Result 1738 states and 6318 transitions. [2021-06-05 21:00:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,856 INFO L225 Difference]: With dead ends: 1738 [2021-06-05 21:00:39,856 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 21:00:39,856 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 21:00:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 923. [2021-06-05 21:00:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 3.804772234273319) internal successors, (3508), 922 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 3508 transitions. [2021-06-05 21:00:39,872 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 3508 transitions. Word has length 25 [2021-06-05 21:00:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:39,872 INFO L482 AbstractCegarLoop]: Abstraction has 923 states and 3508 transitions. [2021-06-05 21:00:39,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 3508 transitions. [2021-06-05 21:00:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:39,874 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:39,874 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:39,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-06-05 21:00:39,874 INFO L430 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1819813275, now seen corresponding path program 698 times [2021-06-05 21:00:39,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:39,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706903279] [2021-06-05 21:00:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:39,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:39,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706903279] [2021-06-05 21:00:39,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706903279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:39,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:39,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:39,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188198436] [2021-06-05 21:00:39,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:39,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:39,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:39,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:39,940 INFO L87 Difference]: Start difference. First operand 923 states and 3508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:39,985 INFO L93 Difference]: Finished difference Result 1702 states and 6142 transitions. [2021-06-05 21:00:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:39,988 INFO L225 Difference]: With dead ends: 1702 [2021-06-05 21:00:39,988 INFO L226 Difference]: Without dead ends: 1427 [2021-06-05 21:00:39,988 INFO L810 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 [2021-06-05 21:00:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-06-05 21:00:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 895. [2021-06-05 21:00:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.8120805369127515) internal successors, (3408), 894 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3408 transitions. [2021-06-05 21:00:40,004 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3408 transitions. Word has length 25 [2021-06-05 21:00:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,004 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 3408 transitions. [2021-06-05 21:00:40,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3408 transitions. [2021-06-05 21:00:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,006 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,006 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-06-05 21:00:40,006 INFO L430 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,006 INFO L82 PathProgramCache]: Analyzing trace with hash 257848603, now seen corresponding path program 699 times [2021-06-05 21:00:40,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079432065] [2021-06-05 21:00:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079432065] [2021-06-05 21:00:40,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079432065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131666845] [2021-06-05 21:00:40,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,078 INFO L87 Difference]: Start difference. First operand 895 states and 3408 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,126 INFO L93 Difference]: Finished difference Result 1762 states and 6418 transitions. [2021-06-05 21:00:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,129 INFO L225 Difference]: With dead ends: 1762 [2021-06-05 21:00:40,129 INFO L226 Difference]: Without dead ends: 1479 [2021-06-05 21:00:40,129 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-06-05 21:00:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 931. [2021-06-05 21:00:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 3.793548387096774) internal successors, (3528), 930 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 3528 transitions. [2021-06-05 21:00:40,146 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 3528 transitions. Word has length 25 [2021-06-05 21:00:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,146 INFO L482 AbstractCegarLoop]: Abstraction has 931 states and 3528 transitions. [2021-06-05 21:00:40,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 3528 transitions. [2021-06-05 21:00:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,148 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,148 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-06-05 21:00:40,148 INFO L430 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1430397669, now seen corresponding path program 700 times [2021-06-05 21:00:40,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090273949] [2021-06-05 21:00:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090273949] [2021-06-05 21:00:40,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090273949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120786144] [2021-06-05 21:00:40,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,217 INFO L87 Difference]: Start difference. First operand 931 states and 3528 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,262 INFO L93 Difference]: Finished difference Result 1742 states and 6306 transitions. [2021-06-05 21:00:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,265 INFO L225 Difference]: With dead ends: 1742 [2021-06-05 21:00:40,265 INFO L226 Difference]: Without dead ends: 1443 [2021-06-05 21:00:40,265 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-06-05 21:00:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 895. [2021-06-05 21:00:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.7986577181208054) internal successors, (3396), 894 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3396 transitions. [2021-06-05 21:00:40,288 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3396 transitions. Word has length 25 [2021-06-05 21:00:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,288 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 3396 transitions. [2021-06-05 21:00:40,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3396 transitions. [2021-06-05 21:00:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,290 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,290 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-06-05 21:00:40,290 INFO L430 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 645853565, now seen corresponding path program 701 times [2021-06-05 21:00:40,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488989149] [2021-06-05 21:00:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488989149] [2021-06-05 21:00:40,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488989149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29587428] [2021-06-05 21:00:40,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,393 INFO L87 Difference]: Start difference. First operand 895 states and 3396 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,442 INFO L93 Difference]: Finished difference Result 1678 states and 6054 transitions. [2021-06-05 21:00:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,442 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 [2021-06-05 21:00:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,445 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 21:00:40,445 INFO L226 Difference]: Without dead ends: 1431 [2021-06-05 21:00:40,445 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-06-05 21:00:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 919. [2021-06-05 21:00:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 3.7821350762527235) internal successors, (3472), 918 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 3472 transitions. [2021-06-05 21:00:40,462 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 3472 transitions. Word has length 25 [2021-06-05 21:00:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,462 INFO L482 AbstractCegarLoop]: Abstraction has 919 states and 3472 transitions. [2021-06-05 21:00:40,462 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) [2021-06-05 21:00:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 3472 transitions. [2021-06-05 21:00:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,464 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-06-05 21:00:40,464 INFO L430 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash -200943397, now seen corresponding path program 702 times [2021-06-05 21:00:40,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101701337] [2021-06-05 21:00:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101701337] [2021-06-05 21:00:40,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101701337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869832308] [2021-06-05 21:00:40,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,530 INFO L87 Difference]: Start difference. First operand 919 states and 3472 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,576 INFO L93 Difference]: Finished difference Result 1694 states and 6102 transitions. [2021-06-05 21:00:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,576 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 [2021-06-05 21:00:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,578 INFO L225 Difference]: With dead ends: 1694 [2021-06-05 21:00:40,578 INFO L226 Difference]: Without dead ends: 1395 [2021-06-05 21:00:40,578 INFO L810 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 [2021-06-05 21:00:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-06-05 21:00:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 883. [2021-06-05 21:00:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 3.8072562358276643) internal successors, (3358), 882 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 3358 transitions. [2021-06-05 21:00:40,594 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 3358 transitions. Word has length 25 [2021-06-05 21:00:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,594 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 3358 transitions. [2021-06-05 21:00:40,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 3358 transitions. [2021-06-05 21:00:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,595 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,596 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-06-05 21:00:40,596 INFO L430 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,596 INFO L82 PathProgramCache]: Analyzing trace with hash 4290459, now seen corresponding path program 703 times [2021-06-05 21:00:40,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830500137] [2021-06-05 21:00:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830500137] [2021-06-05 21:00:40,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830500137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414037766] [2021-06-05 21:00:40,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,661 INFO L87 Difference]: Start difference. First operand 883 states and 3358 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,705 INFO L93 Difference]: Finished difference Result 1698 states and 6140 transitions. [2021-06-05 21:00:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,708 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 21:00:40,708 INFO L226 Difference]: Without dead ends: 1415 [2021-06-05 21:00:40,708 INFO L810 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 [2021-06-05 21:00:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-06-05 21:00:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 883. [2021-06-05 21:00:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 3.7755102040816326) internal successors, (3330), 882 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 3330 transitions. [2021-06-05 21:00:40,724 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 3330 transitions. Word has length 25 [2021-06-05 21:00:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,725 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 3330 transitions. [2021-06-05 21:00:40,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,725 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 3330 transitions. [2021-06-05 21:00:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,726 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,726 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-06-05 21:00:40,726 INFO L430 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1085353085, now seen corresponding path program 704 times [2021-06-05 21:00:40,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377081939] [2021-06-05 21:00:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377081939] [2021-06-05 21:00:40,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377081939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234434561] [2021-06-05 21:00:40,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,792 INFO L87 Difference]: Start difference. First operand 883 states and 3330 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,847 INFO L93 Difference]: Finished difference Result 1662 states and 5964 transitions. [2021-06-05 21:00:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,849 INFO L225 Difference]: With dead ends: 1662 [2021-06-05 21:00:40,850 INFO L226 Difference]: Without dead ends: 1387 [2021-06-05 21:00:40,850 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2021-06-05 21:00:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 855. [2021-06-05 21:00:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 3.7798594847775178) internal successors, (3228), 854 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 3228 transitions. [2021-06-05 21:00:40,865 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 3228 transitions. Word has length 25 [2021-06-05 21:00:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,865 INFO L482 AbstractCegarLoop]: Abstraction has 855 states and 3228 transitions. [2021-06-05 21:00:40,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 3228 transitions. [2021-06-05 21:00:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,866 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,866 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-06-05 21:00:40,866 INFO L430 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1020346267, now seen corresponding path program 705 times [2021-06-05 21:00:40,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865208953] [2021-06-05 21:00:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:40,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:40,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865208953] [2021-06-05 21:00:40,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865208953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:40,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:40,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:40,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820663194] [2021-06-05 21:00:40,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:40,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:40,933 INFO L87 Difference]: Start difference. First operand 855 states and 3228 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:40,976 INFO L93 Difference]: Finished difference Result 1711 states and 6188 transitions. [2021-06-05 21:00:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:40,976 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 [2021-06-05 21:00:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:40,978 INFO L225 Difference]: With dead ends: 1711 [2021-06-05 21:00:40,979 INFO L226 Difference]: Without dead ends: 1428 [2021-06-05 21:00:40,979 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:40,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-06-05 21:00:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 917. [2021-06-05 21:00:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 3.760917030567686) internal successors, (3445), 916 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 3445 transitions. [2021-06-05 21:00:40,995 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 3445 transitions. Word has length 25 [2021-06-05 21:00:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:40,995 INFO L482 AbstractCegarLoop]: Abstraction has 917 states and 3445 transitions. [2021-06-05 21:00:40,995 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) [2021-06-05 21:00:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 3445 transitions. [2021-06-05 21:00:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:40,996 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:40,996 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:40,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-06-05 21:00:40,996 INFO L430 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:40,996 INFO L82 PathProgramCache]: Analyzing trace with hash -767035493, now seen corresponding path program 706 times [2021-06-05 21:00:40,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:40,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54956187] [2021-06-05 21:00:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54956187] [2021-06-05 21:00:41,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54956187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390176827] [2021-06-05 21:00:41,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,063 INFO L87 Difference]: Start difference. First operand 917 states and 3445 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,101 INFO L93 Difference]: Finished difference Result 1554 states and 5636 transitions. [2021-06-05 21:00:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,101 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 [2021-06-05 21:00:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,103 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 21:00:41,103 INFO L226 Difference]: Without dead ends: 1174 [2021-06-05 21:00:41,103 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-06-05 21:00:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 855. [2021-06-05 21:00:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 3.7540983606557377) internal successors, (3206), 854 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 3206 transitions. [2021-06-05 21:00:41,118 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 3206 transitions. Word has length 25 [2021-06-05 21:00:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,118 INFO L482 AbstractCegarLoop]: Abstraction has 855 states and 3206 transitions. [2021-06-05 21:00:41,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,119 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 3206 transitions. [2021-06-05 21:00:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,120 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,120 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-06-05 21:00:41,120 INFO L430 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1408351229, now seen corresponding path program 707 times [2021-06-05 21:00:41,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064997639] [2021-06-05 21:00:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064997639] [2021-06-05 21:00:41,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064997639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846263166] [2021-06-05 21:00:41,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,201 INFO L87 Difference]: Start difference. First operand 855 states and 3206 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,245 INFO L93 Difference]: Finished difference Result 1657 states and 5935 transitions. [2021-06-05 21:00:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,248 INFO L225 Difference]: With dead ends: 1657 [2021-06-05 21:00:41,248 INFO L226 Difference]: Without dead ends: 1410 [2021-06-05 21:00:41,248 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-06-05 21:00:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 899. [2021-06-05 21:00:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 3.739420935412027) internal successors, (3358), 898 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 3358 transitions. [2021-06-05 21:00:41,263 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 3358 transitions. Word has length 25 [2021-06-05 21:00:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,263 INFO L482 AbstractCegarLoop]: Abstraction has 899 states and 3358 transitions. [2021-06-05 21:00:41,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 3358 transitions. [2021-06-05 21:00:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,265 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,265 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-06-05 21:00:41,265 INFO L430 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1681966885, now seen corresponding path program 708 times [2021-06-05 21:00:41,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073051885] [2021-06-05 21:00:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073051885] [2021-06-05 21:00:41,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073051885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266579845] [2021-06-05 21:00:41,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,340 INFO L87 Difference]: Start difference. First operand 899 states and 3358 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,372 INFO L93 Difference]: Finished difference Result 1536 states and 5549 transitions. [2021-06-05 21:00:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,375 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 21:00:41,375 INFO L226 Difference]: Without dead ends: 1152 [2021-06-05 21:00:41,375 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-06-05 21:00:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 833. [2021-06-05 21:00:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 3.7632211538461537) internal successors, (3131), 832 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 3131 transitions. [2021-06-05 21:00:41,389 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 3131 transitions. Word has length 25 [2021-06-05 21:00:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,389 INFO L482 AbstractCegarLoop]: Abstraction has 833 states and 3131 transitions. [2021-06-05 21:00:41,389 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) [2021-06-05 21:00:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 3131 transitions. [2021-06-05 21:00:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,390 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,390 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-06-05 21:00:41,390 INFO L430 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash -785095811, now seen corresponding path program 709 times [2021-06-05 21:00:41,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622529576] [2021-06-05 21:00:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622529576] [2021-06-05 21:00:41,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622529576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123089696] [2021-06-05 21:00:41,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,456 INFO L87 Difference]: Start difference. First operand 833 states and 3131 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,498 INFO L93 Difference]: Finished difference Result 1572 states and 5633 transitions. [2021-06-05 21:00:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,501 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 21:00:41,501 INFO L226 Difference]: Without dead ends: 1289 [2021-06-05 21:00:41,501 INFO L810 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 [2021-06-05 21:00:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2021-06-05 21:00:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 833. [2021-06-05 21:00:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 3.719951923076923) internal successors, (3095), 832 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 3095 transitions. [2021-06-05 21:00:41,516 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 3095 transitions. Word has length 25 [2021-06-05 21:00:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,516 INFO L482 AbstractCegarLoop]: Abstraction has 833 states and 3095 transitions. [2021-06-05 21:00:41,516 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) [2021-06-05 21:00:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 3095 transitions. [2021-06-05 21:00:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,517 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,517 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-06-05 21:00:41,517 INFO L430 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1821625213, now seen corresponding path program 710 times [2021-06-05 21:00:41,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960287622] [2021-06-05 21:00:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960287622] [2021-06-05 21:00:41,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960287622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598545652] [2021-06-05 21:00:41,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,582 INFO L87 Difference]: Start difference. First operand 833 states and 3095 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,624 INFO L93 Difference]: Finished difference Result 1552 states and 5521 transitions. [2021-06-05 21:00:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,625 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 [2021-06-05 21:00:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,627 INFO L225 Difference]: With dead ends: 1552 [2021-06-05 21:00:41,627 INFO L226 Difference]: Without dead ends: 1253 [2021-06-05 21:00:41,627 INFO L810 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 [2021-06-05 21:00:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2021-06-05 21:00:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 797. [2021-06-05 21:00:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 3.7148241206030153) internal successors, (2957), 796 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2957 transitions. [2021-06-05 21:00:41,641 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2957 transitions. Word has length 25 [2021-06-05 21:00:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,641 INFO L482 AbstractCegarLoop]: Abstraction has 797 states and 2957 transitions. [2021-06-05 21:00:41,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2957 transitions. [2021-06-05 21:00:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,642 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,642 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-06-05 21:00:41,642 INFO L430 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1546516571, now seen corresponding path program 711 times [2021-06-05 21:00:41,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849798244] [2021-06-05 21:00:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849798244] [2021-06-05 21:00:41,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849798244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558502537] [2021-06-05 21:00:41,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,708 INFO L87 Difference]: Start difference. First operand 797 states and 2957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,752 INFO L93 Difference]: Finished difference Result 1499 states and 5302 transitions. [2021-06-05 21:00:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,753 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 [2021-06-05 21:00:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,755 INFO L225 Difference]: With dead ends: 1499 [2021-06-05 21:00:41,755 INFO L226 Difference]: Without dead ends: 1216 [2021-06-05 21:00:41,755 INFO L810 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 [2021-06-05 21:00:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-06-05 21:00:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 705. [2021-06-05 21:00:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 3.6349431818181817) internal successors, (2559), 704 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 2559 transitions. [2021-06-05 21:00:41,767 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 2559 transitions. Word has length 25 [2021-06-05 21:00:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,767 INFO L482 AbstractCegarLoop]: Abstraction has 705 states and 2559 transitions. [2021-06-05 21:00:41,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,767 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 2559 transitions. [2021-06-05 21:00:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,768 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,768 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-06-05 21:00:41,768 INFO L430 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash 942566269, now seen corresponding path program 712 times [2021-06-05 21:00:41,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180510108] [2021-06-05 21:00:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180510108] [2021-06-05 21:00:41,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180510108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291128366] [2021-06-05 21:00:41,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,834 INFO L87 Difference]: Start difference. First operand 705 states and 2559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,867 INFO L93 Difference]: Finished difference Result 1342 states and 4750 transitions. [2021-06-05 21:00:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,867 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 [2021-06-05 21:00:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,869 INFO L225 Difference]: With dead ends: 1342 [2021-06-05 21:00:41,869 INFO L226 Difference]: Without dead ends: 962 [2021-06-05 21:00:41,869 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:41,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-06-05 21:00:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 643. [2021-06-05 21:00:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 3.607476635514019) internal successors, (2316), 642 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 2316 transitions. [2021-06-05 21:00:41,879 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 2316 transitions. Word has length 25 [2021-06-05 21:00:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:41,879 INFO L482 AbstractCegarLoop]: Abstraction has 643 states and 2316 transitions. [2021-06-05 21:00:41,879 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) [2021-06-05 21:00:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 2316 transitions. [2021-06-05 21:00:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:41,880 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:41,880 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:41,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-06-05 21:00:41,880 INFO L430 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2134672253, now seen corresponding path program 713 times [2021-06-05 21:00:41,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:41,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436832611] [2021-06-05 21:00:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:41,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:41,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436832611] [2021-06-05 21:00:41,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436832611] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:41,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:41,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:41,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231187475] [2021-06-05 21:00:41,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:41,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:41,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:41,954 INFO L87 Difference]: Start difference. First operand 643 states and 2316 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:41,993 INFO L93 Difference]: Finished difference Result 1277 states and 4532 transitions. [2021-06-05 21:00:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:41,995 INFO L225 Difference]: With dead ends: 1277 [2021-06-05 21:00:41,995 INFO L226 Difference]: Without dead ends: 1014 [2021-06-05 21:00:41,996 INFO L810 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 [2021-06-05 21:00:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-06-05 21:00:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 695. [2021-06-05 21:00:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 3.602305475504323) internal successors, (2500), 694 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 2500 transitions. [2021-06-05 21:00:42,006 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 2500 transitions. Word has length 25 [2021-06-05 21:00:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,006 INFO L482 AbstractCegarLoop]: Abstraction has 695 states and 2500 transitions. [2021-06-05 21:00:42,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 2500 transitions. [2021-06-05 21:00:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,007 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,007 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-06-05 21:00:42,007 INFO L430 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash 313636827, now seen corresponding path program 714 times [2021-06-05 21:00:42,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287458460] [2021-06-05 21:00:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287458460] [2021-06-05 21:00:42,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287458460] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115018229] [2021-06-05 21:00:42,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,084 INFO L87 Difference]: Start difference. First operand 695 states and 2500 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,112 INFO L93 Difference]: Finished difference Result 1013 states and 3595 transitions. [2021-06-05 21:00:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,114 INFO L225 Difference]: With dead ends: 1013 [2021-06-05 21:00:42,114 INFO L226 Difference]: Without dead ends: 617 [2021-06-05 21:00:42,114 INFO L810 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 [2021-06-05 21:00:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-06-05 21:00:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-06-05 21:00:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 3.61525974025974) internal successors, (2227), 616 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 2227 transitions. [2021-06-05 21:00:42,122 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 2227 transitions. Word has length 25 [2021-06-05 21:00:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,122 INFO L482 AbstractCegarLoop]: Abstraction has 617 states and 2227 transitions. [2021-06-05 21:00:42,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 2227 transitions. [2021-06-05 21:00:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,123 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-06-05 21:00:42,123 INFO L430 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,123 INFO L82 PathProgramCache]: Analyzing trace with hash -705575073, now seen corresponding path program 715 times [2021-06-05 21:00:42,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228723887] [2021-06-05 21:00:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228723887] [2021-06-05 21:00:42,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228723887] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056981722] [2021-06-05 21:00:42,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,196 INFO L87 Difference]: Start difference. First operand 617 states and 2227 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,236 INFO L93 Difference]: Finished difference Result 1056 states and 3680 transitions. [2021-06-05 21:00:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,238 INFO L225 Difference]: With dead ends: 1056 [2021-06-05 21:00:42,238 INFO L226 Difference]: Without dead ends: 809 [2021-06-05 21:00:42,238 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-06-05 21:00:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 617. [2021-06-05 21:00:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 3.5762987012987013) internal successors, (2203), 616 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 2203 transitions. [2021-06-05 21:00:42,247 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 2203 transitions. Word has length 25 [2021-06-05 21:00:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,247 INFO L482 AbstractCegarLoop]: Abstraction has 617 states and 2203 transitions. [2021-06-05 21:00:42,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 2203 transitions. [2021-06-05 21:00:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-06-05 21:00:42,248 INFO L430 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1552372035, now seen corresponding path program 716 times [2021-06-05 21:00:42,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573821788] [2021-06-05 21:00:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573821788] [2021-06-05 21:00:42,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573821788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937095588] [2021-06-05 21:00:42,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,321 INFO L87 Difference]: Start difference. First operand 617 states and 2203 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,361 INFO L93 Difference]: Finished difference Result 1072 states and 3728 transitions. [2021-06-05 21:00:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,362 INFO L225 Difference]: With dead ends: 1072 [2021-06-05 21:00:42,363 INFO L226 Difference]: Without dead ends: 785 [2021-06-05 21:00:42,363 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-06-05 21:00:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 593. [2021-06-05 21:00:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 3.572635135135135) internal successors, (2115), 592 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 2115 transitions. [2021-06-05 21:00:42,371 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 2115 transitions. Word has length 25 [2021-06-05 21:00:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,371 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 2115 transitions. [2021-06-05 21:00:42,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 2115 transitions. [2021-06-05 21:00:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,372 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,372 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-06-05 21:00:42,372 INFO L430 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1626037309, now seen corresponding path program 717 times [2021-06-05 21:00:42,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531009280] [2021-06-05 21:00:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531009280] [2021-06-05 21:00:42,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531009280] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084854642] [2021-06-05 21:00:42,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,457 INFO L87 Difference]: Start difference. First operand 593 states and 2115 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,517 INFO L93 Difference]: Finished difference Result 976 states and 3364 transitions. [2021-06-05 21:00:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,518 INFO L225 Difference]: With dead ends: 976 [2021-06-05 21:00:42,518 INFO L226 Difference]: Without dead ends: 729 [2021-06-05 21:00:42,518 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-06-05 21:00:42,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 537. [2021-06-05 21:00:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 3.513059701492537) internal successors, (1883), 536 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1883 transitions. [2021-06-05 21:00:42,526 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1883 transitions. Word has length 25 [2021-06-05 21:00:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,526 INFO L482 AbstractCegarLoop]: Abstraction has 537 states and 1883 transitions. [2021-06-05 21:00:42,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1883 transitions. [2021-06-05 21:00:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,527 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,527 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-06-05 21:00:42,527 INFO L430 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash -280849347, now seen corresponding path program 718 times [2021-06-05 21:00:42,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986229123] [2021-06-05 21:00:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986229123] [2021-06-05 21:00:42,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986229123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66077794] [2021-06-05 21:00:42,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,633 INFO L87 Difference]: Start difference. First operand 537 states and 1883 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,661 INFO L93 Difference]: Finished difference Result 855 states and 2978 transitions. [2021-06-05 21:00:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,662 INFO L225 Difference]: With dead ends: 855 [2021-06-05 21:00:42,662 INFO L226 Difference]: Without dead ends: 493 [2021-06-05 21:00:42,662 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-06-05 21:00:42,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2021-06-05 21:00:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 3.477642276422764) internal successors, (1711), 492 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 1711 transitions. [2021-06-05 21:00:42,668 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 1711 transitions. Word has length 25 [2021-06-05 21:00:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,668 INFO L482 AbstractCegarLoop]: Abstraction has 493 states and 1711 transitions. [2021-06-05 21:00:42,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 1711 transitions. [2021-06-05 21:00:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,669 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,669 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-06-05 21:00:42,669 INFO L430 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash 769289243, now seen corresponding path program 719 times [2021-06-05 21:00:42,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43207878] [2021-06-05 21:00:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43207878] [2021-06-05 21:00:42,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43207878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475145385] [2021-06-05 21:00:42,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,750 INFO L87 Difference]: Start difference. First operand 493 states and 1711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,786 INFO L93 Difference]: Finished difference Result 684 states and 2335 transitions. [2021-06-05 21:00:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,786 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 [2021-06-05 21:00:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,787 INFO L225 Difference]: With dead ends: 684 [2021-06-05 21:00:42,787 INFO L226 Difference]: Without dead ends: 421 [2021-06-05 21:00:42,787 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-06-05 21:00:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-06-05 21:00:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 3.330952380952381) internal successors, (1399), 420 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1399 transitions. [2021-06-05 21:00:42,792 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1399 transitions. Word has length 25 [2021-06-05 21:00:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,792 INFO L482 AbstractCegarLoop]: Abstraction has 421 states and 1399 transitions. [2021-06-05 21:00:42,792 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) [2021-06-05 21:00:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1399 transitions. [2021-06-05 21:00:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 21:00:42,792 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:00:42,792 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:00:42,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-06-05 21:00:42,793 INFO L430 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 21:00:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:00:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 151765885, now seen corresponding path program 720 times [2021-06-05 21:00:42,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:00:42,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382442070] [2021-06-05 21:00:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:00:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:00:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:00:42,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:00:42,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382442070] [2021-06-05 21:00:42,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382442070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:00:42,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:00:42,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 21:00:42,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544733122] [2021-06-05 21:00:42,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 21:00:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:00:42,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 21:00:42,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 21:00:42,874 INFO L87 Difference]: Start difference. First operand 421 states and 1399 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:00:42,895 INFO L93 Difference]: Finished difference Result 420 states and 1398 transitions. [2021-06-05 21:00:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 21:00:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 21:00:42,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:00:42,895 INFO L225 Difference]: With dead ends: 420 [2021-06-05 21:00:42,895 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 21:00:42,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 21:00:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 21:00:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 21:00:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 21:00:42,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-06-05 21:00:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:00:42,896 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 21:00:42,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:00:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 21:00:42,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 21:00:42,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-06-05 21:00:42,898 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 21:00:42,899 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 09:00:42 BasicIcfg [2021-06-05 21:00:42,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 21:00:42,900 INFO L168 Benchmark]: Toolchain (without parser) took 140529.14 ms. Allocated memory was 350.2 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 329.9 MB in the beginning and 1.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 194.3 MB. Max. memory is 16.0 GB. [2021-06-05 21:00:42,900 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 350.2 MB. Free memory was 331.0 MB in the beginning and 330.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 21:00:42,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.12 ms. Allocated memory is still 350.2 MB. Free memory was 329.9 MB in the beginning and 328.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 21:00:42,900 INFO L168 Benchmark]: Boogie Preprocessor took 11.07 ms. Allocated memory is still 350.2 MB. Free memory was 328.3 MB in the beginning and 327.5 MB in the end (delta: 835.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 21:00:42,900 INFO L168 Benchmark]: RCFGBuilder took 182.98 ms. Allocated memory is still 350.2 MB. Free memory was 327.5 MB in the beginning and 316.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 21:00:42,900 INFO L168 Benchmark]: TraceAbstraction took 140308.96 ms. Allocated memory was 350.2 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 316.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 179.6 MB. Max. memory is 16.0 GB. [2021-06-05 21:00:42,900 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 0.13 ms. Allocated memory is still 350.2 MB. Free memory was 331.0 MB in the beginning and 330.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.12 ms. Allocated memory is still 350.2 MB. Free memory was 329.9 MB in the beginning and 328.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.07 ms. Allocated memory is still 350.2 MB. Free memory was 328.3 MB in the beginning and 327.5 MB in the end (delta: 835.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 182.98 ms. Allocated memory is still 350.2 MB. Free memory was 327.5 MB in the beginning and 316.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 140308.96 ms. Allocated memory was 350.2 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 316.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 179.6 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 140148.5ms, OverallIterations: 724, TraceHistogramMax: 1, EmptinessCheckTime: 1672.1ms, AutomataDifference: 49236.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 253.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 76805 SDtfs, 101628 SDslu, 171869 SDs, 0 SdLazy, 25845 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13845.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5772 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 5044 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 63902.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred in iteration=0, InterpolantAutomatonStates: 5772, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31665.3ms AutomataMinimizationTime, 724 MinimizatonAttempts, 1142199 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 141.6ms SsaConstructionTime, 401.2ms SatisfiabilityAnalysisTime, 54866.2ms InterpolantComputationTime, 18100 NumberOfCodeBlocks, 18100 NumberOfCodeBlocksAsserted, 724 NumberOfCheckSat, 17376 ConstructedInterpolants, 0 QuantifiedInterpolants, 422849 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 724 InterpolantComputations, 724 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...