/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:17:16,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:17:16,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:17:16,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-21 23:17:16,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:17:16,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:17:16,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:17:16,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:17:16,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:17:16,853 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:17:16,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:17:16,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:17:16,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:17:16,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:17:16,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:17:16,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:17:16,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:17:16,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:17:16,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:17:16,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:17:16,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:17:16,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:17:16,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:17:16,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:17:16,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:17:16,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:17:16,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:17:16,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:17:16,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:17:16,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:17:16,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:17:17,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:17:17,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:17:17,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:17:17,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:17:17,341 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:17:17,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_10.c [2020-12-21 23:17:17,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a57bf411d/8d9f5c27778f42adac7514cda596c069/FLAGfdebfdd1e [2020-12-21 23:17:18,093 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:17:18,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c [2020-12-21 23:17:18,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a57bf411d/8d9f5c27778f42adac7514cda596c069/FLAGfdebfdd1e [2020-12-21 23:17:18,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a57bf411d/8d9f5c27778f42adac7514cda596c069 [2020-12-21 23:17:18,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:17:18,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:17:18,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:17:18,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:17:18,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:17:18,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27fd665d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18, skipping insertion in model container [2020-12-21 23:17:18,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:17:18,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:17:18,696 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2020-12-21 23:17:18,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:17:18,711 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:17:18,739 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2020-12-21 23:17:18,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:17:18,765 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:17:18,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18 WrapperNode [2020-12-21 23:17:18,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:17:18,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:17:18,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:17:18,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:17:18,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:17:18,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:17:18,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:17:18,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:17:18,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (1/1) ... [2020-12-21 23:17:18,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:17:18,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:17:18,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:17:18,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:17:18,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (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 [2020-12-21 23:17:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:17:19,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:17:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:17:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:17:19,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:17:19,459 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-21 23:17:19,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:19 BoogieIcfgContainer [2020-12-21 23:17:19,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:17:19,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:17:19,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:17:19,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:17:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:17:18" (1/3) ... [2020-12-21 23:17:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc4c80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:19, skipping insertion in model container [2020-12-21 23:17:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:18" (2/3) ... [2020-12-21 23:17:19,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc4c80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:19, skipping insertion in model container [2020-12-21 23:17:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:19" (3/3) ... [2020-12-21 23:17:19,471 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-12-21 23:17:19,477 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:17:19,482 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:17:19,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:17:19,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:17:19,529 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:17:19,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:17:19,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:17:19,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:17:19,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:17:19,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:17:19,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:17:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-21 23:17:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-21 23:17:19,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:19,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:19,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash 153349273, now seen corresponding path program 1 times [2020-12-21 23:17:19,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:19,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707556607] [2020-12-21 23:17:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:19,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707556607] [2020-12-21 23:17:19,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:19,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:19,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347581887] [2020-12-21 23:17:19,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:19,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:19,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:19,868 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-12-21 23:17:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:19,915 INFO L93 Difference]: Finished difference Result 83 states and 145 transitions. [2020-12-21 23:17:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:19,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-21 23:17:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:19,929 INFO L225 Difference]: With dead ends: 83 [2020-12-21 23:17:19,930 INFO L226 Difference]: Without dead ends: 69 [2020-12-21 23:17:19,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-21 23:17:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-12-21 23:17:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-21 23:17:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 86 transitions. [2020-12-21 23:17:19,990 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 86 transitions. Word has length 17 [2020-12-21 23:17:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:19,991 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 86 transitions. [2020-12-21 23:17:19,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 86 transitions. [2020-12-21 23:17:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-21 23:17:19,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:19,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:19,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:17:19,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:19,994 INFO L82 PathProgramCache]: Analyzing trace with hash -433456741, now seen corresponding path program 1 times [2020-12-21 23:17:19,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:19,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915883242] [2020-12-21 23:17:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915883242] [2020-12-21 23:17:20,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684973868] [2020-12-21 23:17:20,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,059 INFO L87 Difference]: Start difference. First operand 47 states and 86 transitions. Second operand 3 states. [2020-12-21 23:17:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,086 INFO L93 Difference]: Finished difference Result 114 states and 209 transitions. [2020-12-21 23:17:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-21 23:17:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,088 INFO L225 Difference]: With dead ends: 114 [2020-12-21 23:17:20,088 INFO L226 Difference]: Without dead ends: 69 [2020-12-21 23:17:20,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-21 23:17:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-12-21 23:17:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-21 23:17:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 122 transitions. [2020-12-21 23:17:20,101 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 122 transitions. Word has length 17 [2020-12-21 23:17:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,101 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 122 transitions. [2020-12-21 23:17:20,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 122 transitions. [2020-12-21 23:17:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-21 23:17:20,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:17:20,103 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,104 INFO L82 PathProgramCache]: Analyzing trace with hash 459073515, now seen corresponding path program 1 times [2020-12-21 23:17:20,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245159290] [2020-12-21 23:17:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245159290] [2020-12-21 23:17:20,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374001052] [2020-12-21 23:17:20,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,159 INFO L87 Difference]: Start difference. First operand 67 states and 122 transitions. Second operand 3 states. [2020-12-21 23:17:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,178 INFO L93 Difference]: Finished difference Result 105 states and 186 transitions. [2020-12-21 23:17:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-21 23:17:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,180 INFO L225 Difference]: With dead ends: 105 [2020-12-21 23:17:20,181 INFO L226 Difference]: Without dead ends: 72 [2020-12-21 23:17:20,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-21 23:17:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-21 23:17:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-21 23:17:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 124 transitions. [2020-12-21 23:17:20,191 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 124 transitions. Word has length 18 [2020-12-21 23:17:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,192 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 124 transitions. [2020-12-21 23:17:20,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 124 transitions. [2020-12-21 23:17:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-21 23:17:20,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:17:20,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash -552043735, now seen corresponding path program 1 times [2020-12-21 23:17:20,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356689973] [2020-12-21 23:17:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356689973] [2020-12-21 23:17:20,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471872898] [2020-12-21 23:17:20,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,250 INFO L87 Difference]: Start difference. First operand 70 states and 124 transitions. Second operand 3 states. [2020-12-21 23:17:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,270 INFO L93 Difference]: Finished difference Result 133 states and 237 transitions. [2020-12-21 23:17:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-21 23:17:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,273 INFO L225 Difference]: With dead ends: 133 [2020-12-21 23:17:20,273 INFO L226 Difference]: Without dead ends: 131 [2020-12-21 23:17:20,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-21 23:17:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2020-12-21 23:17:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-21 23:17:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-12-21 23:17:20,288 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 18 [2020-12-21 23:17:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,289 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-12-21 23:17:20,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-12-21 23:17:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-21 23:17:20,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:17:20,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1138849749, now seen corresponding path program 1 times [2020-12-21 23:17:20,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540734347] [2020-12-21 23:17:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540734347] [2020-12-21 23:17:20,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110725177] [2020-12-21 23:17:20,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,390 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 3 states. [2020-12-21 23:17:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,414 INFO L93 Difference]: Finished difference Result 221 states and 395 transitions. [2020-12-21 23:17:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-21 23:17:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,417 INFO L225 Difference]: With dead ends: 221 [2020-12-21 23:17:20,417 INFO L226 Difference]: Without dead ends: 133 [2020-12-21 23:17:20,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-21 23:17:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-12-21 23:17:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-21 23:17:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 231 transitions. [2020-12-21 23:17:20,445 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 231 transitions. Word has length 18 [2020-12-21 23:17:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,445 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 231 transitions. [2020-12-21 23:17:20,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 231 transitions. [2020-12-21 23:17:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:17:20,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:17:20,447 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,450 INFO L82 PathProgramCache]: Analyzing trace with hash 66727088, now seen corresponding path program 1 times [2020-12-21 23:17:20,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028625423] [2020-12-21 23:17:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028625423] [2020-12-21 23:17:20,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306826312] [2020-12-21 23:17:20,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,524 INFO L87 Difference]: Start difference. First operand 131 states and 231 transitions. Second operand 3 states. [2020-12-21 23:17:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,545 INFO L93 Difference]: Finished difference Result 198 states and 346 transitions. [2020-12-21 23:17:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 23:17:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,548 INFO L225 Difference]: With dead ends: 198 [2020-12-21 23:17:20,548 INFO L226 Difference]: Without dead ends: 135 [2020-12-21 23:17:20,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-21 23:17:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-12-21 23:17:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-21 23:17:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 231 transitions. [2020-12-21 23:17:20,564 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 231 transitions. Word has length 19 [2020-12-21 23:17:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,564 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 231 transitions. [2020-12-21 23:17:20,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 231 transitions. [2020-12-21 23:17:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:17:20,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:17:20,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,567 INFO L82 PathProgramCache]: Analyzing trace with hash -944390162, now seen corresponding path program 1 times [2020-12-21 23:17:20,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25582098] [2020-12-21 23:17:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25582098] [2020-12-21 23:17:20,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228241686] [2020-12-21 23:17:20,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,622 INFO L87 Difference]: Start difference. First operand 133 states and 231 transitions. Second operand 3 states. [2020-12-21 23:17:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,647 INFO L93 Difference]: Finished difference Result 381 states and 665 transitions. [2020-12-21 23:17:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 23:17:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,651 INFO L225 Difference]: With dead ends: 381 [2020-12-21 23:17:20,651 INFO L226 Difference]: Without dead ends: 255 [2020-12-21 23:17:20,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-12-21 23:17:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2020-12-21 23:17:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-21 23:17:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 435 transitions. [2020-12-21 23:17:20,682 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 435 transitions. Word has length 19 [2020-12-21 23:17:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,683 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 435 transitions. [2020-12-21 23:17:20,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 435 transitions. [2020-12-21 23:17:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:17:20,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:17:20,686 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash -357584148, now seen corresponding path program 1 times [2020-12-21 23:17:20,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094068226] [2020-12-21 23:17:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094068226] [2020-12-21 23:17:20,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702630895] [2020-12-21 23:17:20,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,737 INFO L87 Difference]: Start difference. First operand 253 states and 435 transitions. Second operand 3 states. [2020-12-21 23:17:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,780 INFO L93 Difference]: Finished difference Result 321 states and 557 transitions. [2020-12-21 23:17:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 23:17:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,784 INFO L225 Difference]: With dead ends: 321 [2020-12-21 23:17:20,785 INFO L226 Difference]: Without dead ends: 319 [2020-12-21 23:17:20,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-21 23:17:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 253. [2020-12-21 23:17:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-21 23:17:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 431 transitions. [2020-12-21 23:17:20,833 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 431 transitions. Word has length 19 [2020-12-21 23:17:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,834 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 431 transitions. [2020-12-21 23:17:20,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 431 transitions. [2020-12-21 23:17:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-21 23:17:20,844 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash 788890080, now seen corresponding path program 1 times [2020-12-21 23:17:20,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570383214] [2020-12-21 23:17:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:20,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570383214] [2020-12-21 23:17:20,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:20,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:20,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737865209] [2020-12-21 23:17:20,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:20,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:20,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:20,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,899 INFO L87 Difference]: Start difference. First operand 253 states and 431 transitions. Second operand 3 states. [2020-12-21 23:17:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:20,924 INFO L93 Difference]: Finished difference Result 469 states and 809 transitions. [2020-12-21 23:17:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:20,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:20,928 INFO L225 Difference]: With dead ends: 469 [2020-12-21 23:17:20,928 INFO L226 Difference]: Without dead ends: 467 [2020-12-21 23:17:20,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:20,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-12-21 23:17:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 353. [2020-12-21 23:17:20,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-12-21 23:17:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 591 transitions. [2020-12-21 23:17:20,976 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 591 transitions. Word has length 20 [2020-12-21 23:17:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:20,977 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 591 transitions. [2020-12-21 23:17:20,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 591 transitions. [2020-12-21 23:17:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:20,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:20,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:20,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:17:20,981 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:20,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:20,982 INFO L82 PathProgramCache]: Analyzing trace with hash 202084066, now seen corresponding path program 1 times [2020-12-21 23:17:20,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:20,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522208977] [2020-12-21 23:17:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522208977] [2020-12-21 23:17:21,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896992017] [2020-12-21 23:17:21,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,022 INFO L87 Difference]: Start difference. First operand 353 states and 591 transitions. Second operand 3 states. [2020-12-21 23:17:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,076 INFO L93 Difference]: Finished difference Result 837 states and 1409 transitions. [2020-12-21 23:17:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,082 INFO L225 Difference]: With dead ends: 837 [2020-12-21 23:17:21,083 INFO L226 Difference]: Without dead ends: 491 [2020-12-21 23:17:21,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-12-21 23:17:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2020-12-21 23:17:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-21 23:17:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 811 transitions. [2020-12-21 23:17:21,151 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 811 transitions. Word has length 20 [2020-12-21 23:17:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:21,152 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 811 transitions. [2020-12-21 23:17:21,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 811 transitions. [2020-12-21 23:17:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:21,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:21,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:21,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-21 23:17:21,161 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:21,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1313996925, now seen corresponding path program 1 times [2020-12-21 23:17:21,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:21,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240108160] [2020-12-21 23:17:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240108160] [2020-12-21 23:17:21,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115552183] [2020-12-21 23:17:21,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,241 INFO L87 Difference]: Start difference. First operand 489 states and 811 transitions. Second operand 3 states. [2020-12-21 23:17:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,294 INFO L93 Difference]: Finished difference Result 741 states and 1225 transitions. [2020-12-21 23:17:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,302 INFO L225 Difference]: With dead ends: 741 [2020-12-21 23:17:21,302 INFO L226 Difference]: Without dead ends: 503 [2020-12-21 23:17:21,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-12-21 23:17:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2020-12-21 23:17:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-12-21 23:17:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 819 transitions. [2020-12-21 23:17:21,357 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 819 transitions. Word has length 21 [2020-12-21 23:17:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:21,357 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 819 transitions. [2020-12-21 23:17:21,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 819 transitions. [2020-12-21 23:17:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:21,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:21,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:21,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-21 23:17:21,365 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1969853121, now seen corresponding path program 1 times [2020-12-21 23:17:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:21,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846513114] [2020-12-21 23:17:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846513114] [2020-12-21 23:17:21,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146220746] [2020-12-21 23:17:21,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,415 INFO L87 Difference]: Start difference. First operand 501 states and 819 transitions. Second operand 3 states. [2020-12-21 23:17:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,446 INFO L93 Difference]: Finished difference Result 905 states and 1501 transitions. [2020-12-21 23:17:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,452 INFO L225 Difference]: With dead ends: 905 [2020-12-21 23:17:21,452 INFO L226 Difference]: Without dead ends: 903 [2020-12-21 23:17:21,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-12-21 23:17:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 709. [2020-12-21 23:17:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-21 23:17:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2020-12-21 23:17:21,486 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 21 [2020-12-21 23:17:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:21,486 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2020-12-21 23:17:21,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2020-12-21 23:17:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:21,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:21,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:21,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-21 23:17:21,490 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1383047107, now seen corresponding path program 1 times [2020-12-21 23:17:21,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:21,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579190838] [2020-12-21 23:17:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579190838] [2020-12-21 23:17:21,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563417533] [2020-12-21 23:17:21,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,539 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand 3 states. [2020-12-21 23:17:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,584 INFO L93 Difference]: Finished difference Result 1657 states and 2653 transitions. [2020-12-21 23:17:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,590 INFO L225 Difference]: With dead ends: 1657 [2020-12-21 23:17:21,590 INFO L226 Difference]: Without dead ends: 967 [2020-12-21 23:17:21,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2020-12-21 23:17:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2020-12-21 23:17:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-12-21 23:17:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1523 transitions. [2020-12-21 23:17:21,636 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1523 transitions. Word has length 21 [2020-12-21 23:17:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:21,641 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1523 transitions. [2020-12-21 23:17:21,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1523 transitions. [2020-12-21 23:17:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:21,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:21,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:21,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-21 23:17:21,650 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:21,651 INFO L82 PathProgramCache]: Analyzing trace with hash 936119319, now seen corresponding path program 1 times [2020-12-21 23:17:21,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:21,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046629840] [2020-12-21 23:17:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046629840] [2020-12-21 23:17:21,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593977689] [2020-12-21 23:17:21,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,679 INFO L87 Difference]: Start difference. First operand 965 states and 1523 transitions. Second operand 3 states. [2020-12-21 23:17:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,707 INFO L93 Difference]: Finished difference Result 1449 states and 2277 transitions. [2020-12-21 23:17:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:21,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,713 INFO L225 Difference]: With dead ends: 1449 [2020-12-21 23:17:21,713 INFO L226 Difference]: Without dead ends: 983 [2020-12-21 23:17:21,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-12-21 23:17:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2020-12-21 23:17:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-12-21 23:17:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1523 transitions. [2020-12-21 23:17:21,745 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1523 transitions. Word has length 22 [2020-12-21 23:17:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:21,745 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1523 transitions. [2020-12-21 23:17:21,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1523 transitions. [2020-12-21 23:17:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:21,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:21,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:21,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-21 23:17:21,747 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash -74997931, now seen corresponding path program 1 times [2020-12-21 23:17:21,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:21,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854189849] [2020-12-21 23:17:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854189849] [2020-12-21 23:17:21,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637363310] [2020-12-21 23:17:21,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,777 INFO L87 Difference]: Start difference. First operand 981 states and 1523 transitions. Second operand 3 states. [2020-12-21 23:17:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,811 INFO L93 Difference]: Finished difference Result 1737 states and 2741 transitions. [2020-12-21 23:17:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,821 INFO L225 Difference]: With dead ends: 1737 [2020-12-21 23:17:21,822 INFO L226 Difference]: Without dead ends: 1735 [2020-12-21 23:17:21,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-12-21 23:17:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1413. [2020-12-21 23:17:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-12-21 23:17:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2131 transitions. [2020-12-21 23:17:21,896 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2131 transitions. Word has length 22 [2020-12-21 23:17:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:21,896 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 2131 transitions. [2020-12-21 23:17:21,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2131 transitions. [2020-12-21 23:17:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:21,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:21,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:21,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-21 23:17:21,900 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:21,900 INFO L82 PathProgramCache]: Analyzing trace with hash -661803945, now seen corresponding path program 1 times [2020-12-21 23:17:21,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:21,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420083529] [2020-12-21 23:17:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:21,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420083529] [2020-12-21 23:17:21,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:21,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:21,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166594957] [2020-12-21 23:17:21,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:21,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:21,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:21,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,926 INFO L87 Difference]: Start difference. First operand 1413 states and 2131 transitions. Second operand 3 states. [2020-12-21 23:17:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:21,971 INFO L93 Difference]: Finished difference Result 3273 states and 4949 transitions. [2020-12-21 23:17:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:21,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:21,981 INFO L225 Difference]: With dead ends: 3273 [2020-12-21 23:17:21,982 INFO L226 Difference]: Without dead ends: 1895 [2020-12-21 23:17:21,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-12-21 23:17:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2020-12-21 23:17:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-12-21 23:17:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2819 transitions. [2020-12-21 23:17:22,047 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2819 transitions. Word has length 22 [2020-12-21 23:17:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:22,047 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 2819 transitions. [2020-12-21 23:17:22,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2819 transitions. [2020-12-21 23:17:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:22,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:22,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:22,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-21 23:17:22,050 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1970246488, now seen corresponding path program 1 times [2020-12-21 23:17:22,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:22,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853203862] [2020-12-21 23:17:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:22,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853203862] [2020-12-21 23:17:22,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:22,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:22,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833669314] [2020-12-21 23:17:22,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:22,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:22,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:22,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,077 INFO L87 Difference]: Start difference. First operand 1893 states and 2819 transitions. Second operand 3 states. [2020-12-21 23:17:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:22,120 INFO L93 Difference]: Finished difference Result 2841 states and 4213 transitions. [2020-12-21 23:17:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:22,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:22,130 INFO L225 Difference]: With dead ends: 2841 [2020-12-21 23:17:22,130 INFO L226 Difference]: Without dead ends: 1927 [2020-12-21 23:17:22,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-12-21 23:17:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2020-12-21 23:17:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-12-21 23:17:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2819 transitions. [2020-12-21 23:17:22,190 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2819 transitions. Word has length 23 [2020-12-21 23:17:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:22,190 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2819 transitions. [2020-12-21 23:17:22,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2819 transitions. [2020-12-21 23:17:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:22,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:22,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:22,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-21 23:17:22,194 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:22,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:22,194 INFO L82 PathProgramCache]: Analyzing trace with hash 959129238, now seen corresponding path program 1 times [2020-12-21 23:17:22,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:22,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526578705] [2020-12-21 23:17:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:22,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526578705] [2020-12-21 23:17:22,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:22,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:22,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180105559] [2020-12-21 23:17:22,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:22,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:22,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:22,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,218 INFO L87 Difference]: Start difference. First operand 1925 states and 2819 transitions. Second operand 3 states. [2020-12-21 23:17:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:22,274 INFO L93 Difference]: Finished difference Result 3337 states and 4965 transitions. [2020-12-21 23:17:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:22,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:22,288 INFO L225 Difference]: With dead ends: 3337 [2020-12-21 23:17:22,289 INFO L226 Difference]: Without dead ends: 3335 [2020-12-21 23:17:22,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-12-21 23:17:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2821. [2020-12-21 23:17:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-12-21 23:17:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4003 transitions. [2020-12-21 23:17:22,400 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4003 transitions. Word has length 23 [2020-12-21 23:17:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:22,400 INFO L481 AbstractCegarLoop]: Abstraction has 2821 states and 4003 transitions. [2020-12-21 23:17:22,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4003 transitions. [2020-12-21 23:17:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:22,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:22,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:22,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-21 23:17:22,405 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:22,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:22,406 INFO L82 PathProgramCache]: Analyzing trace with hash 372323224, now seen corresponding path program 1 times [2020-12-21 23:17:22,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:22,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155653105] [2020-12-21 23:17:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:22,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155653105] [2020-12-21 23:17:22,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:22,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:22,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771683250] [2020-12-21 23:17:22,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:22,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:22,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:22,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,429 INFO L87 Difference]: Start difference. First operand 2821 states and 4003 transitions. Second operand 3 states. [2020-12-21 23:17:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:22,502 INFO L93 Difference]: Finished difference Result 6473 states and 9189 transitions. [2020-12-21 23:17:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:22,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:22,519 INFO L225 Difference]: With dead ends: 6473 [2020-12-21 23:17:22,519 INFO L226 Difference]: Without dead ends: 3719 [2020-12-21 23:17:22,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-12-21 23:17:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2020-12-21 23:17:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3717 states. [2020-12-21 23:17:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5187 transitions. [2020-12-21 23:17:22,639 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5187 transitions. Word has length 23 [2020-12-21 23:17:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:22,639 INFO L481 AbstractCegarLoop]: Abstraction has 3717 states and 5187 transitions. [2020-12-21 23:17:22,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5187 transitions. [2020-12-21 23:17:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:22,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:22,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:22,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-21 23:17:22,644 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash -331549300, now seen corresponding path program 1 times [2020-12-21 23:17:22,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:22,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295398905] [2020-12-21 23:17:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:22,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295398905] [2020-12-21 23:17:22,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:22,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:22,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513494761] [2020-12-21 23:17:22,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:22,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:22,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:22,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,670 INFO L87 Difference]: Start difference. First operand 3717 states and 5187 transitions. Second operand 3 states. [2020-12-21 23:17:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:22,745 INFO L93 Difference]: Finished difference Result 5577 states and 7749 transitions. [2020-12-21 23:17:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:22,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:22,763 INFO L225 Difference]: With dead ends: 5577 [2020-12-21 23:17:22,763 INFO L226 Difference]: Without dead ends: 3783 [2020-12-21 23:17:22,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-12-21 23:17:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2020-12-21 23:17:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-12-21 23:17:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5187 transitions. [2020-12-21 23:17:22,923 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5187 transitions. Word has length 24 [2020-12-21 23:17:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:22,923 INFO L481 AbstractCegarLoop]: Abstraction has 3781 states and 5187 transitions. [2020-12-21 23:17:22,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5187 transitions. [2020-12-21 23:17:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:22,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:22,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:22,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-21 23:17:22,930 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:22,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1342666550, now seen corresponding path program 1 times [2020-12-21 23:17:22,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:22,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649926184] [2020-12-21 23:17:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:22,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649926184] [2020-12-21 23:17:22,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:22,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:22,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323622578] [2020-12-21 23:17:22,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:22,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:22,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:22,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:22,962 INFO L87 Difference]: Start difference. First operand 3781 states and 5187 transitions. Second operand 3 states. [2020-12-21 23:17:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:23,068 INFO L93 Difference]: Finished difference Result 6409 states and 8901 transitions. [2020-12-21 23:17:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:23,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:23,115 INFO L225 Difference]: With dead ends: 6409 [2020-12-21 23:17:23,116 INFO L226 Difference]: Without dead ends: 6407 [2020-12-21 23:17:23,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2020-12-21 23:17:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 5637. [2020-12-21 23:17:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5637 states. [2020-12-21 23:17:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 7491 transitions. [2020-12-21 23:17:23,300 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 7491 transitions. Word has length 24 [2020-12-21 23:17:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:23,300 INFO L481 AbstractCegarLoop]: Abstraction has 5637 states and 7491 transitions. [2020-12-21 23:17:23,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 7491 transitions. [2020-12-21 23:17:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:23,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:23,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:23,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-21 23:17:23,360 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:23,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:23,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1929472564, now seen corresponding path program 1 times [2020-12-21 23:17:23,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:23,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544923861] [2020-12-21 23:17:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:23,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544923861] [2020-12-21 23:17:23,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:23,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:23,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323124896] [2020-12-21 23:17:23,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:23,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:23,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:23,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:23,392 INFO L87 Difference]: Start difference. First operand 5637 states and 7491 transitions. Second operand 3 states. [2020-12-21 23:17:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:23,549 INFO L93 Difference]: Finished difference Result 12809 states and 16965 transitions. [2020-12-21 23:17:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:23,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:23,568 INFO L225 Difference]: With dead ends: 12809 [2020-12-21 23:17:23,569 INFO L226 Difference]: Without dead ends: 7303 [2020-12-21 23:17:23,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-12-21 23:17:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 7301. [2020-12-21 23:17:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7301 states. [2020-12-21 23:17:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9475 transitions. [2020-12-21 23:17:23,808 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9475 transitions. Word has length 24 [2020-12-21 23:17:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:23,808 INFO L481 AbstractCegarLoop]: Abstraction has 7301 states and 9475 transitions. [2020-12-21 23:17:23,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9475 transitions. [2020-12-21 23:17:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:23,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:23,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:23,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-21 23:17:23,818 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1327225645, now seen corresponding path program 1 times [2020-12-21 23:17:23,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:23,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852095471] [2020-12-21 23:17:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:23,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852095471] [2020-12-21 23:17:23,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:23,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:23,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935740515] [2020-12-21 23:17:23,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:23,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:23,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:23,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:23,864 INFO L87 Difference]: Start difference. First operand 7301 states and 9475 transitions. Second operand 3 states. [2020-12-21 23:17:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:24,040 INFO L93 Difference]: Finished difference Result 10953 states and 14149 transitions. [2020-12-21 23:17:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:24,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:24,057 INFO L225 Difference]: With dead ends: 10953 [2020-12-21 23:17:24,057 INFO L226 Difference]: Without dead ends: 7431 [2020-12-21 23:17:24,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2020-12-21 23:17:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7429. [2020-12-21 23:17:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7429 states. [2020-12-21 23:17:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 9475 transitions. [2020-12-21 23:17:24,267 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 9475 transitions. Word has length 25 [2020-12-21 23:17:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:24,267 INFO L481 AbstractCegarLoop]: Abstraction has 7429 states and 9475 transitions. [2020-12-21 23:17:24,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 9475 transitions. [2020-12-21 23:17:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:24,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:24,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:24,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-21 23:17:24,276 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:24,276 INFO L82 PathProgramCache]: Analyzing trace with hash 316108395, now seen corresponding path program 1 times [2020-12-21 23:17:24,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:24,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96616716] [2020-12-21 23:17:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:24,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96616716] [2020-12-21 23:17:24,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:24,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:24,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131749460] [2020-12-21 23:17:24,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:24,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:24,307 INFO L87 Difference]: Start difference. First operand 7429 states and 9475 transitions. Second operand 3 states. [2020-12-21 23:17:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:24,517 INFO L93 Difference]: Finished difference Result 12297 states and 15749 transitions. [2020-12-21 23:17:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:24,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:24,541 INFO L225 Difference]: With dead ends: 12297 [2020-12-21 23:17:24,541 INFO L226 Difference]: Without dead ends: 12295 [2020-12-21 23:17:24,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:24,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2020-12-21 23:17:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11269. [2020-12-21 23:17:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11269 states. [2020-12-21 23:17:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13955 transitions. [2020-12-21 23:17:24,921 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13955 transitions. Word has length 25 [2020-12-21 23:17:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:24,921 INFO L481 AbstractCegarLoop]: Abstraction has 11269 states and 13955 transitions. [2020-12-21 23:17:24,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13955 transitions. [2020-12-21 23:17:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:24,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:24,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:24,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-21 23:17:24,938 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:24,939 INFO L82 PathProgramCache]: Analyzing trace with hash -270697619, now seen corresponding path program 1 times [2020-12-21 23:17:24,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:24,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215339846] [2020-12-21 23:17:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:24,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215339846] [2020-12-21 23:17:24,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:24,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:24,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490706803] [2020-12-21 23:17:24,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:24,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:24,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:24,961 INFO L87 Difference]: Start difference. First operand 11269 states and 13955 transitions. Second operand 3 states. [2020-12-21 23:17:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:25,193 INFO L93 Difference]: Finished difference Result 25353 states and 31109 transitions. [2020-12-21 23:17:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:25,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:25,224 INFO L225 Difference]: With dead ends: 25353 [2020-12-21 23:17:25,224 INFO L226 Difference]: Without dead ends: 14343 [2020-12-21 23:17:25,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14343 states. [2020-12-21 23:17:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14343 to 14341. [2020-12-21 23:17:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14341 states. [2020-12-21 23:17:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 17155 transitions. [2020-12-21 23:17:25,761 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 17155 transitions. Word has length 25 [2020-12-21 23:17:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:25,762 INFO L481 AbstractCegarLoop]: Abstraction has 14341 states and 17155 transitions. [2020-12-21 23:17:25,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 17155 transitions. [2020-12-21 23:17:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:25,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:25,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:25,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-21 23:17:25,780 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1209641729, now seen corresponding path program 1 times [2020-12-21 23:17:25,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:25,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152653510] [2020-12-21 23:17:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:25,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152653510] [2020-12-21 23:17:25,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:25,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:25,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454049623] [2020-12-21 23:17:25,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:25,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:25,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:25,806 INFO L87 Difference]: Start difference. First operand 14341 states and 17155 transitions. Second operand 3 states. [2020-12-21 23:17:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,094 INFO L93 Difference]: Finished difference Result 21513 states and 25605 transitions. [2020-12-21 23:17:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,121 INFO L225 Difference]: With dead ends: 21513 [2020-12-21 23:17:26,122 INFO L226 Difference]: Without dead ends: 14599 [2020-12-21 23:17:26,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2020-12-21 23:17:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2020-12-21 23:17:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14597 states. [2020-12-21 23:17:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 17155 transitions. [2020-12-21 23:17:26,491 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 17155 transitions. Word has length 26 [2020-12-21 23:17:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,492 INFO L481 AbstractCegarLoop]: Abstraction has 14597 states and 17155 transitions. [2020-12-21 23:17:26,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 17155 transitions. [2020-12-21 23:17:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:26,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:26,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-21 23:17:26,507 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 198524479, now seen corresponding path program 1 times [2020-12-21 23:17:26,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010760221] [2020-12-21 23:17:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010760221] [2020-12-21 23:17:26,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819612957] [2020-12-21 23:17:26,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,547 INFO L87 Difference]: Start difference. First operand 14597 states and 17155 transitions. Second operand 3 states. [2020-12-21 23:17:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,867 INFO L93 Difference]: Finished difference Result 23559 states and 27396 transitions. [2020-12-21 23:17:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,910 INFO L225 Difference]: With dead ends: 23559 [2020-12-21 23:17:26,911 INFO L226 Difference]: Without dead ends: 23557 [2020-12-21 23:17:26,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-12-21 23:17:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 22533. [2020-12-21 23:17:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22533 states. [2020-12-21 23:17:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 25859 transitions. [2020-12-21 23:17:27,444 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 25859 transitions. Word has length 26 [2020-12-21 23:17:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,445 INFO L481 AbstractCegarLoop]: Abstraction has 22533 states and 25859 transitions. [2020-12-21 23:17:27,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 25859 transitions. [2020-12-21 23:17:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:27,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:27,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-21 23:17:27,477 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash -388281535, now seen corresponding path program 1 times [2020-12-21 23:17:27,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901843906] [2020-12-21 23:17:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901843906] [2020-12-21 23:17:27,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932312067] [2020-12-21 23:17:27,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,503 INFO L87 Difference]: Start difference. First operand 22533 states and 25859 transitions. Second operand 3 states. [2020-12-21 23:17:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,827 INFO L93 Difference]: Finished difference Result 50181 states and 56579 transitions. [2020-12-21 23:17:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,828 INFO L225 Difference]: With dead ends: 50181 [2020-12-21 23:17:27,828 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:17:27,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:17:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:17:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:17:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:17:27,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-12-21 23:17:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,998 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:17:27,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:17:27,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:17:27,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-21 23:17:28,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:17:28,020 INFO L189 CegarLoopUtils]: For program point L126(line 126) no Hoare annotation was computed. [2020-12-21 23:17:28,020 INFO L189 CegarLoopUtils]: For program point L151(line 151) no Hoare annotation was computed. [2020-12-21 23:17:28,020 INFO L189 CegarLoopUtils]: For program point L110-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,021 INFO L189 CegarLoopUtils]: For program point L135-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,021 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:17:28,021 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:17:28,021 INFO L189 CegarLoopUtils]: For program point L111(line 111) no Hoare annotation was computed. [2020-12-21 23:17:28,021 INFO L189 CegarLoopUtils]: For program point L136(line 136) no Hoare annotation was computed. [2020-12-21 23:17:28,021 INFO L192 CegarLoopUtils]: At program point L161(lines 7 165) the Hoare annotation is: true [2020-12-21 23:17:28,021 INFO L189 CegarLoopUtils]: For program point L120-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L145-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L104-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L96-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L121(line 121) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L88-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L146(line 146) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L80-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,022 INFO L189 CegarLoopUtils]: For program point L72-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,023 INFO L189 CegarLoopUtils]: For program point L130-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,023 INFO L192 CegarLoopUtils]: At program point L155-1(lines 41 160) the Hoare annotation is: true [2020-12-21 23:17:28,023 INFO L192 CegarLoopUtils]: At program point L164(lines 6 165) the Hoare annotation is: true [2020-12-21 23:17:28,023 INFO L189 CegarLoopUtils]: For program point L131(line 131) no Hoare annotation was computed. [2020-12-21 23:17:28,023 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:17:28,023 INFO L189 CegarLoopUtils]: For program point L156(line 156) no Hoare annotation was computed. [2020-12-21 23:17:28,023 INFO L185 CegarLoopUtils]: At program point L156-1(lines 7 165) the Hoare annotation is: false [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 163) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point L115-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point L140-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point L116(line 116) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point L141(line 141) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point L100-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,024 INFO L189 CegarLoopUtils]: For program point L125-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L92-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L150-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L84-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L76-1(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L68(lines 68 70) no Hoare annotation was computed. [2020-12-21 23:17:28,025 INFO L189 CegarLoopUtils]: For program point L68-2(lines 41 160) no Hoare annotation was computed. [2020-12-21 23:17:28,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:17:28 BoogieIcfgContainer [2020-12-21 23:17:28,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:17:28,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:17:28,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:17:28,039 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:17:28,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:19" (3/4) ... [2020-12-21 23:17:28,043 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:17:28,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-21 23:17:28,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-21 23:17:28,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:17:28,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:17:28,126 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_10.c-witness.graphml [2020-12-21 23:17:28,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:17:28,129 INFO L168 Benchmark]: Toolchain (without parser) took 9647.84 ms. Allocated memory was 157.3 MB in the beginning and 921.7 MB in the end (delta: 764.4 MB). Free memory was 132.9 MB in the beginning and 752.9 MB in the end (delta: -620.0 MB). Peak memory consumption was 145.4 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,130 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 130.0 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:17:28,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.54 ms. Allocated memory is still 157.3 MB. Free memory was 132.6 MB in the beginning and 122.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.65 ms. Allocated memory is still 157.3 MB. Free memory was 122.4 MB in the beginning and 120.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,131 INFO L168 Benchmark]: Boogie Preprocessor took 61.22 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 119.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,132 INFO L168 Benchmark]: RCFGBuilder took 556.34 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 135.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,132 INFO L168 Benchmark]: TraceAbstraction took 8575.16 ms. Allocated memory was 157.3 MB in the beginning and 921.7 MB in the end (delta: 764.4 MB). Free memory was 134.8 MB in the beginning and 757.1 MB in the end (delta: -622.3 MB). Peak memory consumption was 142.9 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,132 INFO L168 Benchmark]: Witness Printer took 87.63 ms. Allocated memory is still 921.7 MB. Free memory was 757.1 MB in the beginning and 752.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:28,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 130.0 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.54 ms. Allocated memory is still 157.3 MB. Free memory was 132.6 MB in the beginning and 122.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.65 ms. Allocated memory is still 157.3 MB. Free memory was 122.4 MB in the beginning and 120.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.22 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 119.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.34 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 135.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8575.16 ms. Allocated memory was 157.3 MB in the beginning and 921.7 MB in the end (delta: 764.4 MB). Free memory was 134.8 MB in the beginning and 757.1 MB in the end (delta: -622.3 MB). Peak memory consumption was 142.9 MB. Max. memory is 8.0 GB. * Witness Printer took 87.63 ms. Allocated memory is still 921.7 MB. Free memory was 757.1 MB in the beginning and 752.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 163]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 28, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2304 SDtfs, 1149 SDslu, 1533 SDs, 0 SdLazy, 149 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22533occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 1033 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 25948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...