/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:42:34,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:42:34,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:42:34,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 19:42:34,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:42:34,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:42:34,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:42:34,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:42:34,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:42:34,904 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:42:34,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:42:34,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:42:34,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:42:34,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:42:34,905 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:42:34,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:42:34,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:42:34,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:42:34,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:42:34,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:42:34,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:42:34,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:42:34,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:42:34,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:42:34,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:42:34,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:42:34,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:42:34,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:42:34,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:42:34,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:42:35,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:42:35,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:42:35,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:42:35,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:42:35,384 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:42:35,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_11.c [2020-12-22 19:42:35,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cd167f78/33a6f3e74b1d4d3996eb89401a512068/FLAG32feb26a9 [2020-12-22 19:42:36,131 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:42:36,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c [2020-12-22 19:42:36,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cd167f78/33a6f3e74b1d4d3996eb89401a512068/FLAG32feb26a9 [2020-12-22 19:42:36,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cd167f78/33a6f3e74b1d4d3996eb89401a512068 [2020-12-22 19:42:36,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:42:36,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:42:36,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:36,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:42:36,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:42:36,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b6f1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36, skipping insertion in model container [2020-12-22 19:42:36,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:42:36,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:42:36,801 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_11.c[4246,4259] [2020-12-22 19:42:36,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:36,817 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:42:36,847 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_11.c[4246,4259] [2020-12-22 19:42:36,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:36,866 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:42:36,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36 WrapperNode [2020-12-22 19:42:36,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:36,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:36,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:42:36,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:42:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:36,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:42:36,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:42:36,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:42:36,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:36,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:37,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:37,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (1/1) ... [2020-12-22 19:42:37,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:42:37,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:42:37,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:42:37,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:42:37,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (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 [2020-12-22 19:42:37,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:42:37,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:42:37,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:42:37,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:42:37,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:42:37,603 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-22 19:42:37,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:37 BoogieIcfgContainer [2020-12-22 19:42:37,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:42:37,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:42:37,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:42:37,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:42:37,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:42:36" (1/3) ... [2020-12-22 19:42:37,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c73eca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:37, skipping insertion in model container [2020-12-22 19:42:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:36" (2/3) ... [2020-12-22 19:42:37,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c73eca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:37, skipping insertion in model container [2020-12-22 19:42:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:37" (3/3) ... [2020-12-22 19:42:37,615 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-12-22 19:42:37,622 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:42:37,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 19:42:37,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 19:42:37,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:42:37,673 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:42:37,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:42:37,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:42:37,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:42:37,674 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:42:37,674 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:42:37,675 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:42:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-22 19:42:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:42:37,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:42:37,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash 28704011, now seen corresponding path program 1 times [2020-12-22 19:42:37,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853647502] [2020-12-22 19:42:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:37,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853647502] [2020-12-22 19:42:37,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:37,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275813250] [2020-12-22 19:42:37,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:42:37,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:42:37,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:37,944 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-22 19:42:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,964 INFO L93 Difference]: Finished difference Result 44 states and 76 transitions. [2020-12-22 19:42:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:42:37,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-22 19:42:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,977 INFO L225 Difference]: With dead ends: 44 [2020-12-22 19:42:37,978 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 19:42:37,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 19:42:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-22 19:42:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 19:42:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 74 transitions. [2020-12-22 19:42:38,024 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 74 transitions. Word has length 5 [2020-12-22 19:42:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,025 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 74 transitions. [2020-12-22 19:42:38,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:42:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 74 transitions. [2020-12-22 19:42:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:42:38,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:42:38,027 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,028 INFO L82 PathProgramCache]: Analyzing trace with hash 889698507, now seen corresponding path program 1 times [2020-12-22 19:42:38,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401343234] [2020-12-22 19:42:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401343234] [2020-12-22 19:42:38,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:38,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564327341] [2020-12-22 19:42:38,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,099 INFO L87 Difference]: Start difference. First operand 42 states and 74 transitions. Second operand 3 states. [2020-12-22 19:42:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,114 INFO L93 Difference]: Finished difference Result 41 states and 73 transitions. [2020-12-22 19:42:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:42:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,117 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:42:38,117 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 19:42:38,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 19:42:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 19:42:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:42:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 71 transitions. [2020-12-22 19:42:38,125 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 71 transitions. Word has length 6 [2020-12-22 19:42:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 71 transitions. [2020-12-22 19:42:38,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 71 transitions. [2020-12-22 19:42:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:42:38,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:42:38,127 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 458919617, now seen corresponding path program 1 times [2020-12-22 19:42:38,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291139043] [2020-12-22 19:42:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291139043] [2020-12-22 19:42:38,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113599481] [2020-12-22 19:42:38,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,212 INFO L87 Difference]: Start difference. First operand 39 states and 71 transitions. Second operand 3 states. [2020-12-22 19:42:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,246 INFO L93 Difference]: Finished difference Result 75 states and 137 transitions. [2020-12-22 19:42:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 19:42:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,249 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:42:38,250 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:42:38,250 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 [2020-12-22 19:42:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:42:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2020-12-22 19:42:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:42:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 94 transitions. [2020-12-22 19:42:38,266 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 94 transitions. Word has length 18 [2020-12-22 19:42:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,267 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 94 transitions. [2020-12-22 19:42:38,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 94 transitions. [2020-12-22 19:42:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:42:38,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:42:38,269 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,270 INFO L82 PathProgramCache]: Analyzing trace with hash -552197633, now seen corresponding path program 1 times [2020-12-22 19:42:38,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995547889] [2020-12-22 19:42:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995547889] [2020-12-22 19:42:38,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360979647] [2020-12-22 19:42:38,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,342 INFO L87 Difference]: Start difference. First operand 51 states and 94 transitions. Second operand 3 states. [2020-12-22 19:42:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,399 INFO L93 Difference]: Finished difference Result 75 states and 135 transitions. [2020-12-22 19:42:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 19:42:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,402 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:42:38,405 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:42:38,406 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 [2020-12-22 19:42:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:42:38,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-12-22 19:42:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:42:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 134 transitions. [2020-12-22 19:42:38,428 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 134 transitions. Word has length 18 [2020-12-22 19:42:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,428 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 134 transitions. [2020-12-22 19:42:38,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 134 transitions. [2020-12-22 19:42:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:38,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:42:38,430 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1341819263, now seen corresponding path program 1 times [2020-12-22 19:42:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553113370] [2020-12-22 19:42:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553113370] [2020-12-22 19:42:38,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859884336] [2020-12-22 19:42:38,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,539 INFO L87 Difference]: Start difference. First operand 73 states and 134 transitions. Second operand 3 states. [2020-12-22 19:42:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,564 INFO L93 Difference]: Finished difference Result 78 states and 137 transitions. [2020-12-22 19:42:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,567 INFO L225 Difference]: With dead ends: 78 [2020-12-22 19:42:38,567 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 19:42:38,567 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 [2020-12-22 19:42:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 19:42:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-12-22 19:42:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 19:42:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 136 transitions. [2020-12-22 19:42:38,576 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 136 transitions. Word has length 19 [2020-12-22 19:42:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,577 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 136 transitions. [2020-12-22 19:42:38,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 136 transitions. [2020-12-22 19:42:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:38,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:42:38,579 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 61955585, now seen corresponding path program 1 times [2020-12-22 19:42:38,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336502748] [2020-12-22 19:42:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336502748] [2020-12-22 19:42:38,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304105426] [2020-12-22 19:42:38,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,622 INFO L87 Difference]: Start difference. First operand 76 states and 136 transitions. Second operand 3 states. [2020-12-22 19:42:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,648 INFO L93 Difference]: Finished difference Result 143 states and 258 transitions. [2020-12-22 19:42:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,651 INFO L225 Difference]: With dead ends: 143 [2020-12-22 19:42:38,651 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 19:42:38,651 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 [2020-12-22 19:42:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 19:42:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2020-12-22 19:42:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:42:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 181 transitions. [2020-12-22 19:42:38,663 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 181 transitions. Word has length 19 [2020-12-22 19:42:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,663 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 181 transitions. [2020-12-22 19:42:38,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 181 transitions. [2020-12-22 19:42:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:38,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:42:38,665 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash -949161665, now seen corresponding path program 1 times [2020-12-22 19:42:38,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235105705] [2020-12-22 19:42:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235105705] [2020-12-22 19:42:38,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124734754] [2020-12-22 19:42:38,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,724 INFO L87 Difference]: Start difference. First operand 101 states and 181 transitions. Second operand 3 states. [2020-12-22 19:42:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,759 INFO L93 Difference]: Finished difference Result 145 states and 256 transitions. [2020-12-22 19:42:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,763 INFO L225 Difference]: With dead ends: 145 [2020-12-22 19:42:38,764 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 19:42:38,765 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 [2020-12-22 19:42:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 19:42:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-12-22 19:42:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 19:42:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 255 transitions. [2020-12-22 19:42:38,795 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 255 transitions. Word has length 19 [2020-12-22 19:42:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,796 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 255 transitions. [2020-12-22 19:42:38,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 255 transitions. [2020-12-22 19:42:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:38,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,800 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] [2020-12-22 19:42:38,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:42:38,801 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1920836500, now seen corresponding path program 1 times [2020-12-22 19:42:38,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344223288] [2020-12-22 19:42:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:38,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344223288] [2020-12-22 19:42:38,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77534517] [2020-12-22 19:42:38,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,894 INFO L87 Difference]: Start difference. First operand 143 states and 255 transitions. Second operand 3 states. [2020-12-22 19:42:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,940 INFO L93 Difference]: Finished difference Result 147 states and 256 transitions. [2020-12-22 19:42:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,942 INFO L225 Difference]: With dead ends: 147 [2020-12-22 19:42:38,942 INFO L226 Difference]: Without dead ends: 147 [2020-12-22 19:42:38,943 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 [2020-12-22 19:42:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-22 19:42:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-12-22 19:42:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-22 19:42:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 255 transitions. [2020-12-22 19:42:38,960 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 255 transitions. Word has length 20 [2020-12-22 19:42:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,960 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 255 transitions. [2020-12-22 19:42:38,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 255 transitions. [2020-12-22 19:42:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:38,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,965 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] [2020-12-22 19:42:38,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:42:38,966 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,970 INFO L82 PathProgramCache]: Analyzing trace with hash 640972822, now seen corresponding path program 1 times [2020-12-22 19:42:38,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603422390] [2020-12-22 19:42:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603422390] [2020-12-22 19:42:39,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993049341] [2020-12-22 19:42:39,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,011 INFO L87 Difference]: Start difference. First operand 145 states and 255 transitions. Second operand 3 states. [2020-12-22 19:42:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,036 INFO L93 Difference]: Finished difference Result 279 states and 484 transitions. [2020-12-22 19:42:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,039 INFO L225 Difference]: With dead ends: 279 [2020-12-22 19:42:39,040 INFO L226 Difference]: Without dead ends: 279 [2020-12-22 19:42:39,040 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 [2020-12-22 19:42:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-12-22 19:42:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2020-12-22 19:42:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-22 19:42:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 483 transitions. [2020-12-22 19:42:39,055 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 483 transitions. Word has length 20 [2020-12-22 19:42:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,058 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 483 transitions. [2020-12-22 19:42:39,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 483 transitions. [2020-12-22 19:42:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:39,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,064 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] [2020-12-22 19:42:39,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:42:39,064 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1652090072, now seen corresponding path program 1 times [2020-12-22 19:42:39,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104021657] [2020-12-22 19:42:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104021657] [2020-12-22 19:42:39,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174888010] [2020-12-22 19:42:39,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,103 INFO L87 Difference]: Start difference. First operand 277 states and 483 transitions. Second operand 3 states. [2020-12-22 19:42:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,121 INFO L93 Difference]: Finished difference Result 351 states and 616 transitions. [2020-12-22 19:42:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,125 INFO L225 Difference]: With dead ends: 351 [2020-12-22 19:42:39,125 INFO L226 Difference]: Without dead ends: 351 [2020-12-22 19:42:39,126 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 [2020-12-22 19:42:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-12-22 19:42:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 277. [2020-12-22 19:42:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-22 19:42:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 479 transitions. [2020-12-22 19:42:39,135 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 479 transitions. Word has length 20 [2020-12-22 19:42:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,136 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 479 transitions. [2020-12-22 19:42:39,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 479 transitions. [2020-12-22 19:42:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,137 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] [2020-12-22 19:42:39,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:42:39,138 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1604465292, now seen corresponding path program 1 times [2020-12-22 19:42:39,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479626000] [2020-12-22 19:42:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479626000] [2020-12-22 19:42:39,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563444047] [2020-12-22 19:42:39,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,192 INFO L87 Difference]: Start difference. First operand 277 states and 479 transitions. Second operand 3 states. [2020-12-22 19:42:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,218 INFO L93 Difference]: Finished difference Result 515 states and 896 transitions. [2020-12-22 19:42:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,227 INFO L225 Difference]: With dead ends: 515 [2020-12-22 19:42:39,227 INFO L226 Difference]: Without dead ends: 515 [2020-12-22 19:42:39,228 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 [2020-12-22 19:42:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-12-22 19:42:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 385. [2020-12-22 19:42:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-12-22 19:42:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 655 transitions. [2020-12-22 19:42:39,242 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 655 transitions. Word has length 21 [2020-12-22 19:42:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,243 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 655 transitions. [2020-12-22 19:42:39,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 655 transitions. [2020-12-22 19:42:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:39,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,245 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] [2020-12-22 19:42:39,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:42:39,245 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1679384754, now seen corresponding path program 1 times [2020-12-22 19:42:39,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562769772] [2020-12-22 19:42:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562769772] [2020-12-22 19:42:39,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346389944] [2020-12-22 19:42:39,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,285 INFO L87 Difference]: Start difference. First operand 385 states and 655 transitions. Second operand 3 states. [2020-12-22 19:42:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,307 INFO L93 Difference]: Finished difference Result 539 states and 908 transitions. [2020-12-22 19:42:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,311 INFO L225 Difference]: With dead ends: 539 [2020-12-22 19:42:39,311 INFO L226 Difference]: Without dead ends: 539 [2020-12-22 19:42:39,312 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 [2020-12-22 19:42:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-12-22 19:42:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2020-12-22 19:42:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-12-22 19:42:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 907 transitions. [2020-12-22 19:42:39,328 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 907 transitions. Word has length 21 [2020-12-22 19:42:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,328 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 907 transitions. [2020-12-22 19:42:39,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 907 transitions. [2020-12-22 19:42:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:39,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,330 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] [2020-12-22 19:42:39,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:42:39,331 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1801397547, now seen corresponding path program 1 times [2020-12-22 19:42:39,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012354711] [2020-12-22 19:42:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012354711] [2020-12-22 19:42:39,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648849309] [2020-12-22 19:42:39,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,381 INFO L87 Difference]: Start difference. First operand 537 states and 907 transitions. Second operand 3 states. [2020-12-22 19:42:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,405 INFO L93 Difference]: Finished difference Result 551 states and 916 transitions. [2020-12-22 19:42:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,413 INFO L225 Difference]: With dead ends: 551 [2020-12-22 19:42:39,413 INFO L226 Difference]: Without dead ends: 551 [2020-12-22 19:42:39,418 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 [2020-12-22 19:42:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-12-22 19:42:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2020-12-22 19:42:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-12-22 19:42:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2020-12-22 19:42:39,434 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 22 [2020-12-22 19:42:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,434 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2020-12-22 19:42:39,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2020-12-22 19:42:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:39,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,438 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] [2020-12-22 19:42:39,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:42:39,439 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash 521533869, now seen corresponding path program 1 times [2020-12-22 19:42:39,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922361002] [2020-12-22 19:42:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922361002] [2020-12-22 19:42:39,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373325706] [2020-12-22 19:42:39,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,489 INFO L87 Difference]: Start difference. First operand 549 states and 915 transitions. Second operand 3 states. [2020-12-22 19:42:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,508 INFO L93 Difference]: Finished difference Result 999 states and 1676 transitions. [2020-12-22 19:42:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,515 INFO L225 Difference]: With dead ends: 999 [2020-12-22 19:42:39,515 INFO L226 Difference]: Without dead ends: 999 [2020-12-22 19:42:39,516 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 [2020-12-22 19:42:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-12-22 19:42:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 773. [2020-12-22 19:42:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-12-22 19:42:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1259 transitions. [2020-12-22 19:42:39,539 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1259 transitions. Word has length 22 [2020-12-22 19:42:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,539 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1259 transitions. [2020-12-22 19:42:39,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1259 transitions. [2020-12-22 19:42:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:39,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,542 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] [2020-12-22 19:42:39,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:42:39,543 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -489583381, now seen corresponding path program 1 times [2020-12-22 19:42:39,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767157608] [2020-12-22 19:42:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767157608] [2020-12-22 19:42:39,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021494393] [2020-12-22 19:42:39,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,601 INFO L87 Difference]: Start difference. First operand 773 states and 1259 transitions. Second operand 3 states. [2020-12-22 19:42:39,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,638 INFO L93 Difference]: Finished difference Result 1063 states and 1716 transitions. [2020-12-22 19:42:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,645 INFO L225 Difference]: With dead ends: 1063 [2020-12-22 19:42:39,646 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 19:42:39,648 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 [2020-12-22 19:42:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 19:42:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-12-22 19:42:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 19:42:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1715 transitions. [2020-12-22 19:42:39,675 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1715 transitions. Word has length 22 [2020-12-22 19:42:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,675 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1715 transitions. [2020-12-22 19:42:39,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1715 transitions. [2020-12-22 19:42:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:39,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,677 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] [2020-12-22 19:42:39,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:42:39,678 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1012104857, now seen corresponding path program 1 times [2020-12-22 19:42:39,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519708888] [2020-12-22 19:42:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519708888] [2020-12-22 19:42:39,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403739969] [2020-12-22 19:42:39,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,725 INFO L87 Difference]: Start difference. First operand 1061 states and 1715 transitions. Second operand 3 states. [2020-12-22 19:42:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,751 INFO L93 Difference]: Finished difference Result 1079 states and 1716 transitions. [2020-12-22 19:42:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,757 INFO L225 Difference]: With dead ends: 1079 [2020-12-22 19:42:39,758 INFO L226 Difference]: Without dead ends: 1079 [2020-12-22 19:42:39,758 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 [2020-12-22 19:42:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-12-22 19:42:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2020-12-22 19:42:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-12-22 19:42:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1715 transitions. [2020-12-22 19:42:39,792 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1715 transitions. Word has length 23 [2020-12-22 19:42:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,793 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1715 transitions. [2020-12-22 19:42:39,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1715 transitions. [2020-12-22 19:42:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:39,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,799 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] [2020-12-22 19:42:39,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:42:39,800 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2002998761, now seen corresponding path program 1 times [2020-12-22 19:42:39,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771683250] [2020-12-22 19:42:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771683250] [2020-12-22 19:42:39,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514565572] [2020-12-22 19:42:39,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,849 INFO L87 Difference]: Start difference. First operand 1077 states and 1715 transitions. Second operand 3 states. [2020-12-22 19:42:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,878 INFO L93 Difference]: Finished difference Result 1927 states and 3092 transitions. [2020-12-22 19:42:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,890 INFO L225 Difference]: With dead ends: 1927 [2020-12-22 19:42:39,890 INFO L226 Difference]: Without dead ends: 1927 [2020-12-22 19:42:39,891 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 [2020-12-22 19:42:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-12-22 19:42:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1541. [2020-12-22 19:42:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-12-22 19:42:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2387 transitions. [2020-12-22 19:42:39,952 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2387 transitions. Word has length 23 [2020-12-22 19:42:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,953 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2387 transitions. [2020-12-22 19:42:39,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2387 transitions. [2020-12-22 19:42:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:39,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,955 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] [2020-12-22 19:42:39,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:42:39,956 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash 991881511, now seen corresponding path program 1 times [2020-12-22 19:42:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155017748] [2020-12-22 19:42:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:39,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155017748] [2020-12-22 19:42:39,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047721143] [2020-12-22 19:42:39,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,983 INFO L87 Difference]: Start difference. First operand 1541 states and 2387 transitions. Second operand 3 states. [2020-12-22 19:42:40,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,011 INFO L93 Difference]: Finished difference Result 2087 states and 3204 transitions. [2020-12-22 19:42:40,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,023 INFO L225 Difference]: With dead ends: 2087 [2020-12-22 19:42:40,024 INFO L226 Difference]: Without dead ends: 2087 [2020-12-22 19:42:40,024 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 [2020-12-22 19:42:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-12-22 19:42:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2020-12-22 19:42:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-12-22 19:42:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3203 transitions. [2020-12-22 19:42:40,081 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3203 transitions. Word has length 23 [2020-12-22 19:42:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,081 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3203 transitions. [2020-12-22 19:42:40,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3203 transitions. [2020-12-22 19:42:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:40,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,084 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] [2020-12-22 19:42:40,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:42:40,085 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1963634176, now seen corresponding path program 1 times [2020-12-22 19:42:40,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918301147] [2020-12-22 19:42:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918301147] [2020-12-22 19:42:40,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41361139] [2020-12-22 19:42:40,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,122 INFO L87 Difference]: Start difference. First operand 2085 states and 3203 transitions. Second operand 3 states. [2020-12-22 19:42:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,157 INFO L93 Difference]: Finished difference Result 2119 states and 3204 transitions. [2020-12-22 19:42:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,169 INFO L225 Difference]: With dead ends: 2119 [2020-12-22 19:42:40,170 INFO L226 Difference]: Without dead ends: 2119 [2020-12-22 19:42:40,170 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 [2020-12-22 19:42:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-12-22 19:42:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2117. [2020-12-22 19:42:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-12-22 19:42:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3203 transitions. [2020-12-22 19:42:40,231 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3203 transitions. Word has length 24 [2020-12-22 19:42:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,231 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 3203 transitions. [2020-12-22 19:42:40,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3203 transitions. [2020-12-22 19:42:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:40,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,234 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] [2020-12-22 19:42:40,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:42:40,236 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash 683770498, now seen corresponding path program 1 times [2020-12-22 19:42:40,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904836064] [2020-12-22 19:42:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904836064] [2020-12-22 19:42:40,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136999446] [2020-12-22 19:42:40,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,264 INFO L87 Difference]: Start difference. First operand 2117 states and 3203 transitions. Second operand 3 states. [2020-12-22 19:42:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,297 INFO L93 Difference]: Finished difference Result 3719 states and 5668 transitions. [2020-12-22 19:42:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,318 INFO L225 Difference]: With dead ends: 3719 [2020-12-22 19:42:40,318 INFO L226 Difference]: Without dead ends: 3719 [2020-12-22 19:42:40,319 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 [2020-12-22 19:42:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-12-22 19:42:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3077. [2020-12-22 19:42:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-12-22 19:42:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4515 transitions. [2020-12-22 19:42:40,395 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4515 transitions. Word has length 24 [2020-12-22 19:42:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,396 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 4515 transitions. [2020-12-22 19:42:40,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4515 transitions. [2020-12-22 19:42:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:40,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,401 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] [2020-12-22 19:42:40,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:42:40,402 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,402 INFO L82 PathProgramCache]: Analyzing trace with hash -327346752, now seen corresponding path program 1 times [2020-12-22 19:42:40,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935740515] [2020-12-22 19:42:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935740515] [2020-12-22 19:42:40,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678358756] [2020-12-22 19:42:40,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,454 INFO L87 Difference]: Start difference. First operand 3077 states and 4515 transitions. Second operand 3 states. [2020-12-22 19:42:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,490 INFO L93 Difference]: Finished difference Result 4103 states and 5956 transitions. [2020-12-22 19:42:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,512 INFO L225 Difference]: With dead ends: 4103 [2020-12-22 19:42:40,512 INFO L226 Difference]: Without dead ends: 4103 [2020-12-22 19:42:40,512 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 [2020-12-22 19:42:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-12-22 19:42:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2020-12-22 19:42:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-12-22 19:42:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5955 transitions. [2020-12-22 19:42:40,615 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5955 transitions. Word has length 24 [2020-12-22 19:42:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,615 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 5955 transitions. [2020-12-22 19:42:40,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5955 transitions. [2020-12-22 19:42:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:40,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,620 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] [2020-12-22 19:42:40,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:42:40,621 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash -277735972, now seen corresponding path program 1 times [2020-12-22 19:42:40,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131749460] [2020-12-22 19:42:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131749460] [2020-12-22 19:42:40,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100920953] [2020-12-22 19:42:40,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,647 INFO L87 Difference]: Start difference. First operand 4101 states and 5955 transitions. Second operand 3 states. [2020-12-22 19:42:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,693 INFO L93 Difference]: Finished difference Result 4167 states and 5956 transitions. [2020-12-22 19:42:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,715 INFO L225 Difference]: With dead ends: 4167 [2020-12-22 19:42:40,715 INFO L226 Difference]: Without dead ends: 4167 [2020-12-22 19:42:40,716 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 [2020-12-22 19:42:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-12-22 19:42:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2020-12-22 19:42:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2020-12-22 19:42:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5955 transitions. [2020-12-22 19:42:40,814 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5955 transitions. Word has length 25 [2020-12-22 19:42:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,815 INFO L481 AbstractCegarLoop]: Abstraction has 4165 states and 5955 transitions. [2020-12-22 19:42:40,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5955 transitions. [2020-12-22 19:42:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:40,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,820 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] [2020-12-22 19:42:40,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:42:40,821 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1557599650, now seen corresponding path program 1 times [2020-12-22 19:42:40,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426871637] [2020-12-22 19:42:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426871637] [2020-12-22 19:42:40,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158003789] [2020-12-22 19:42:40,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,847 INFO L87 Difference]: Start difference. First operand 4165 states and 5955 transitions. Second operand 3 states. [2020-12-22 19:42:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,911 INFO L93 Difference]: Finished difference Result 7175 states and 10308 transitions. [2020-12-22 19:42:40,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,929 INFO L225 Difference]: With dead ends: 7175 [2020-12-22 19:42:40,930 INFO L226 Difference]: Without dead ends: 7175 [2020-12-22 19:42:40,930 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 [2020-12-22 19:42:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-12-22 19:42:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6149. [2020-12-22 19:42:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2020-12-22 19:42:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8515 transitions. [2020-12-22 19:42:41,073 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8515 transitions. Word has length 25 [2020-12-22 19:42:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 6149 states and 8515 transitions. [2020-12-22 19:42:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8515 transitions. [2020-12-22 19:42:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:41,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,085 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] [2020-12-22 19:42:41,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:42:41,085 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1726250396, now seen corresponding path program 1 times [2020-12-22 19:42:41,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989677061] [2020-12-22 19:42:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989677061] [2020-12-22 19:42:41,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205346403] [2020-12-22 19:42:41,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,132 INFO L87 Difference]: Start difference. First operand 6149 states and 8515 transitions. Second operand 3 states. [2020-12-22 19:42:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,188 INFO L93 Difference]: Finished difference Result 8071 states and 11012 transitions. [2020-12-22 19:42:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,207 INFO L225 Difference]: With dead ends: 8071 [2020-12-22 19:42:41,207 INFO L226 Difference]: Without dead ends: 8071 [2020-12-22 19:42:41,208 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 [2020-12-22 19:42:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2020-12-22 19:42:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8069. [2020-12-22 19:42:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2020-12-22 19:42:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 11011 transitions. [2020-12-22 19:42:41,429 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 11011 transitions. Word has length 25 [2020-12-22 19:42:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,429 INFO L481 AbstractCegarLoop]: Abstraction has 8069 states and 11011 transitions. [2020-12-22 19:42:41,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 11011 transitions. [2020-12-22 19:42:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:41,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,440 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] [2020-12-22 19:42:41,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:42:41,441 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1040733483, now seen corresponding path program 1 times [2020-12-22 19:42:41,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161084395] [2020-12-22 19:42:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161084395] [2020-12-22 19:42:41,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093738594] [2020-12-22 19:42:41,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,472 INFO L87 Difference]: Start difference. First operand 8069 states and 11011 transitions. Second operand 3 states. [2020-12-22 19:42:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,520 INFO L93 Difference]: Finished difference Result 8199 states and 11012 transitions. [2020-12-22 19:42:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,538 INFO L225 Difference]: With dead ends: 8199 [2020-12-22 19:42:41,538 INFO L226 Difference]: Without dead ends: 8199 [2020-12-22 19:42:41,539 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 [2020-12-22 19:42:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2020-12-22 19:42:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2020-12-22 19:42:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8197 states. [2020-12-22 19:42:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 11011 transitions. [2020-12-22 19:42:41,787 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 11011 transitions. Word has length 26 [2020-12-22 19:42:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,787 INFO L481 AbstractCegarLoop]: Abstraction has 8197 states and 11011 transitions. [2020-12-22 19:42:41,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 11011 transitions. [2020-12-22 19:42:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:41,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,798 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] [2020-12-22 19:42:41,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 19:42:41,798 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1974370135, now seen corresponding path program 1 times [2020-12-22 19:42:41,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548107616] [2020-12-22 19:42:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548107616] [2020-12-22 19:42:41,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224076262] [2020-12-22 19:42:41,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,843 INFO L87 Difference]: Start difference. First operand 8197 states and 11011 transitions. Second operand 3 states. [2020-12-22 19:42:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,935 INFO L93 Difference]: Finished difference Result 13831 states and 18564 transitions. [2020-12-22 19:42:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,969 INFO L225 Difference]: With dead ends: 13831 [2020-12-22 19:42:41,969 INFO L226 Difference]: Without dead ends: 13831 [2020-12-22 19:42:41,969 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 [2020-12-22 19:42:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2020-12-22 19:42:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 12293. [2020-12-22 19:42:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12293 states. [2020-12-22 19:42:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 16003 transitions. [2020-12-22 19:42:42,309 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 16003 transitions. Word has length 26 [2020-12-22 19:42:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,309 INFO L481 AbstractCegarLoop]: Abstraction has 12293 states and 16003 transitions. [2020-12-22 19:42:42,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 16003 transitions. [2020-12-22 19:42:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:42,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,328 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] [2020-12-22 19:42:42,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:42:42,329 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,329 INFO L82 PathProgramCache]: Analyzing trace with hash 963252885, now seen corresponding path program 1 times [2020-12-22 19:42:42,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090109020] [2020-12-22 19:42:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090109020] [2020-12-22 19:42:42,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575919195] [2020-12-22 19:42:42,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,353 INFO L87 Difference]: Start difference. First operand 12293 states and 16003 transitions. Second operand 3 states. [2020-12-22 19:42:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,425 INFO L93 Difference]: Finished difference Result 15879 states and 20228 transitions. [2020-12-22 19:42:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,460 INFO L225 Difference]: With dead ends: 15879 [2020-12-22 19:42:42,460 INFO L226 Difference]: Without dead ends: 15879 [2020-12-22 19:42:42,461 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 [2020-12-22 19:42:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2020-12-22 19:42:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2020-12-22 19:42:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15877 states. [2020-12-22 19:42:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20227 transitions. [2020-12-22 19:42:42,976 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20227 transitions. Word has length 26 [2020-12-22 19:42:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,976 INFO L481 AbstractCegarLoop]: Abstraction has 15877 states and 20227 transitions. [2020-12-22 19:42:42,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20227 transitions. [2020-12-22 19:42:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:42,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,998 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, 1] [2020-12-22 19:42:42,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:42:42,998 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1076147793, now seen corresponding path program 1 times [2020-12-22 19:42:42,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292795544] [2020-12-22 19:42:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292795544] [2020-12-22 19:42:43,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137773450] [2020-12-22 19:42:43,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,025 INFO L87 Difference]: Start difference. First operand 15877 states and 20227 transitions. Second operand 3 states. [2020-12-22 19:42:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,097 INFO L93 Difference]: Finished difference Result 16135 states and 20228 transitions. [2020-12-22 19:42:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,209 INFO L225 Difference]: With dead ends: 16135 [2020-12-22 19:42:43,215 INFO L226 Difference]: Without dead ends: 16135 [2020-12-22 19:42:43,215 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 [2020-12-22 19:42:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2020-12-22 19:42:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2020-12-22 19:42:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2020-12-22 19:42:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 20227 transitions. [2020-12-22 19:42:43,554 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 20227 transitions. Word has length 27 [2020-12-22 19:42:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,554 INFO L481 AbstractCegarLoop]: Abstraction has 16133 states and 20227 transitions. [2020-12-22 19:42:43,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 20227 transitions. [2020-12-22 19:42:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:43,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,572 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, 1] [2020-12-22 19:42:43,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:42:43,573 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash -203715885, now seen corresponding path program 1 times [2020-12-22 19:42:43,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318597185] [2020-12-22 19:42:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318597185] [2020-12-22 19:42:43,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528959691] [2020-12-22 19:42:43,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,604 INFO L87 Difference]: Start difference. First operand 16133 states and 20227 transitions. Second operand 3 states. [2020-12-22 19:42:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,713 INFO L93 Difference]: Finished difference Result 26631 states and 33028 transitions. [2020-12-22 19:42:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,914 INFO L225 Difference]: With dead ends: 26631 [2020-12-22 19:42:43,915 INFO L226 Difference]: Without dead ends: 26631 [2020-12-22 19:42:43,915 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 [2020-12-22 19:42:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2020-12-22 19:42:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 24581. [2020-12-22 19:42:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24581 states. [2020-12-22 19:42:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24581 states to 24581 states and 29955 transitions. [2020-12-22 19:42:44,459 INFO L78 Accepts]: Start accepts. Automaton has 24581 states and 29955 transitions. Word has length 27 [2020-12-22 19:42:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:44,460 INFO L481 AbstractCegarLoop]: Abstraction has 24581 states and 29955 transitions. [2020-12-22 19:42:44,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24581 states and 29955 transitions. [2020-12-22 19:42:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:44,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:44,501 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, 1] [2020-12-22 19:42:44,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 19:42:44,501 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1214833135, now seen corresponding path program 1 times [2020-12-22 19:42:44,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:44,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379667766] [2020-12-22 19:42:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:44,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379667766] [2020-12-22 19:42:44,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:44,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:44,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970468526] [2020-12-22 19:42:44,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:44,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:44,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:44,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,527 INFO L87 Difference]: Start difference. First operand 24581 states and 29955 transitions. Second operand 3 states. [2020-12-22 19:42:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:44,791 INFO L93 Difference]: Finished difference Result 31239 states and 36868 transitions. [2020-12-22 19:42:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:44,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:44,865 INFO L225 Difference]: With dead ends: 31239 [2020-12-22 19:42:44,865 INFO L226 Difference]: Without dead ends: 31239 [2020-12-22 19:42:44,867 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 [2020-12-22 19:42:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2020-12-22 19:42:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 31237. [2020-12-22 19:42:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31237 states. [2020-12-22 19:42:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31237 states to 31237 states and 36867 transitions. [2020-12-22 19:42:45,780 INFO L78 Accepts]: Start accepts. Automaton has 31237 states and 36867 transitions. Word has length 27 [2020-12-22 19:42:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:45,780 INFO L481 AbstractCegarLoop]: Abstraction has 31237 states and 36867 transitions. [2020-12-22 19:42:45,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31237 states and 36867 transitions. [2020-12-22 19:42:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:45,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:45,817 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, 1, 1, 1] [2020-12-22 19:42:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 19:42:45,817 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash -2020009046, now seen corresponding path program 1 times [2020-12-22 19:42:45,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:45,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608088181] [2020-12-22 19:42:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:45,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608088181] [2020-12-22 19:42:45,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:45,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:45,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885083848] [2020-12-22 19:42:45,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:45,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,846 INFO L87 Difference]: Start difference. First operand 31237 states and 36867 transitions. Second operand 3 states. [2020-12-22 19:42:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:45,997 INFO L93 Difference]: Finished difference Result 31751 states and 36868 transitions. [2020-12-22 19:42:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:45,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:46,063 INFO L225 Difference]: With dead ends: 31751 [2020-12-22 19:42:46,063 INFO L226 Difference]: Without dead ends: 31751 [2020-12-22 19:42:46,064 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 [2020-12-22 19:42:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31751 states. [2020-12-22 19:42:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31751 to 31749. [2020-12-22 19:42:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-12-22 19:42:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 36867 transitions. [2020-12-22 19:42:46,841 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 36867 transitions. Word has length 28 [2020-12-22 19:42:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:46,842 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 36867 transitions. [2020-12-22 19:42:46,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 36867 transitions. [2020-12-22 19:42:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:47,077 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, 1, 1] [2020-12-22 19:42:47,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 19:42:47,077 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash 995094572, now seen corresponding path program 1 times [2020-12-22 19:42:47,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:47,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47347274] [2020-12-22 19:42:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47347274] [2020-12-22 19:42:47,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:47,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:47,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165398565] [2020-12-22 19:42:47,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:47,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:47,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:47,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:47,108 INFO L87 Difference]: Start difference. First operand 31749 states and 36867 transitions. Second operand 3 states. [2020-12-22 19:42:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:47,291 INFO L93 Difference]: Finished difference Result 61445 states and 67587 transitions. [2020-12-22 19:42:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:47,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:47,361 INFO L225 Difference]: With dead ends: 61445 [2020-12-22 19:42:47,361 INFO L226 Difference]: Without dead ends: 31749 [2020-12-22 19:42:47,363 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 [2020-12-22 19:42:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2020-12-22 19:42:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 31749. [2020-12-22 19:42:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-12-22 19:42:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 34819 transitions. [2020-12-22 19:42:48,140 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 34819 transitions. Word has length 28 [2020-12-22 19:42:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:48,141 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 34819 transitions. [2020-12-22 19:42:48,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 34819 transitions. [2020-12-22 19:42:48,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:48,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:48,342 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, 1, 1] [2020-12-22 19:42:48,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 19:42:48,343 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:48,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2006211822, now seen corresponding path program 1 times [2020-12-22 19:42:48,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:48,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044370783] [2020-12-22 19:42:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:48,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044370783] [2020-12-22 19:42:48,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:48,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:48,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006978917] [2020-12-22 19:42:48,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:48,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:48,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:48,391 INFO L87 Difference]: Start difference. First operand 31749 states and 34819 transitions. Second operand 3 states. [2020-12-22 19:42:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:48,487 INFO L93 Difference]: Finished difference Result 31747 states and 33794 transitions. [2020-12-22 19:42:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:48,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:48,488 INFO L225 Difference]: With dead ends: 31747 [2020-12-22 19:42:48,488 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:42:48,489 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 [2020-12-22 19:42:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:42:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:42:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:42:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:42:48,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-12-22 19:42:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:48,490 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:42:48,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:42:48,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:42:48,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 19:42:48,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:42:48 BoogieIcfgContainer [2020-12-22 19:42:48,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:42:48,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:42:48,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:42:48,497 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:42:48,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:37" (3/4) ... [2020-12-22 19:42:48,501 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:42:48,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 19:42:48,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:42:48,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-22 19:42:48,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:42:48,583 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_11.c-witness.graphml [2020-12-22 19:42:48,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:42:48,587 INFO L168 Benchmark]: Toolchain (without parser) took 12073.74 ms. Allocated memory was 151.0 MB in the beginning and 4.6 GB in the end (delta: 4.4 GB). Free memory was 125.6 MB in the beginning and 4.1 GB in the end (delta: -4.0 GB). Peak memory consumption was 475.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,588 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:42:48,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,590 INFO L168 Benchmark]: Boogie Preprocessor took 54.90 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 112.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,590 INFO L168 Benchmark]: RCFGBuilder took 596.64 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 90.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,590 INFO L168 Benchmark]: TraceAbstraction took 10889.01 ms. Allocated memory was 151.0 MB in the beginning and 4.6 GB in the end (delta: 4.4 GB). Free memory was 90.3 MB in the beginning and 4.1 GB in the end (delta: -4.0 GB). Peak memory consumption was 436.8 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,591 INFO L168 Benchmark]: Witness Printer took 86.92 ms. Allocated memory is still 4.6 GB. Free memory was 4.1 GB in the beginning and 4.1 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:48,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 83.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.90 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 112.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.64 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 90.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10889.01 ms. Allocated memory was 151.0 MB in the beginning and 4.6 GB in the end (delta: 4.4 GB). Free memory was 90.3 MB in the beginning and 4.1 GB in the end (delta: -4.0 GB). Peak memory consumption was 436.8 MB. Max. memory is 8.0 GB. * Witness Printer took 86.92 ms. Allocated memory is still 4.6 GB. Free memory was 4.1 GB in the beginning and 4.1 GB 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: 177]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.8s, OverallIterations: 33, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2894 SDtfs, 1464 SDslu, 1831 SDs, 0 SdLazy, 164 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31749occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.5s AutomataMinimizationTime, 33 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 731 NumberOfCodeBlocks, 731 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 698 ConstructedInterpolants, 0 QuantifiedInterpolants, 33591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 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...