/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:14,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:14,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:15,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:15,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:15,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:15,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:15,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:15,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:15,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:15,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:15,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:15,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:15,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:15,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:15,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:15,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:15,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:15,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:15,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:15,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:15,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:15,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:15,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:15,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:15,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:15,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:15,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:15,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:15,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:15,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:15,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:15,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:15,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:15,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:15,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:15,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:15,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:15,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:15,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:15,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:15,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:08:15,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:15,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:15,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:15,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:15,101 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:15,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:15,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:15,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:15,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:15,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:15,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:15,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:15,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:15,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:15,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:15,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:15,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:15,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:15,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:15,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:15,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:15,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:15,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:15,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:15,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:15,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:15,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:15,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:15,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:15,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:08:15,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:15,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:15,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:15,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:15,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:15,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-25 03:08:15,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d74221a/eb7ca1d8b9984a33a104f093c523e1f5/FLAGeed9aa38a [2020-09-25 03:08:16,298 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:16,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-25 03:08:16,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d74221a/eb7ca1d8b9984a33a104f093c523e1f5/FLAGeed9aa38a [2020-09-25 03:08:16,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d74221a/eb7ca1d8b9984a33a104f093c523e1f5 [2020-09-25 03:08:16,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:16,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:16,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:16,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:16,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:16,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d7fa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16, skipping insertion in model container [2020-09-25 03:08:16,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:16,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:16,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:16,944 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:16,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:16,980 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:16,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16 WrapperNode [2020-09-25 03:08:16,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:16,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:16,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:16,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:16,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:17,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:17,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:17,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:17,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:17,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:17,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:17,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:17,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:17,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:17,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-25 03:08:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 03:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 03:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:17,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:17,458 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:08:17,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:17 BoogieIcfgContainer [2020-09-25 03:08:17,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:17,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:17,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:17,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:17,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:16" (1/3) ... [2020-09-25 03:08:17,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:17, skipping insertion in model container [2020-09-25 03:08:17,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (2/3) ... [2020-09-25 03:08:17,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:17, skipping insertion in model container [2020-09-25 03:08:17,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:17" (3/3) ... [2020-09-25 03:08:17,475 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-09-25 03:08:17,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:17,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:17,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:17,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:17,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:17,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:17,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:17,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:17,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:17,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:17,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 03:08:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:08:17,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:17,637 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] [2020-09-25 03:08:17,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 03:08:17,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:17,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936220139] [2020-09-25 03:08:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:17,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 03:08:17,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:08:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:18,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:18,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 03:08:18,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:18,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936220139] [2020-09-25 03:08:18,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:18,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:08:18,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306530449] [2020-09-25 03:08:18,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:08:18,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:18,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:08:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:08:18,250 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-09-25 03:08:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:18,409 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-09-25 03:08:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:08:18,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 03:08:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:18,428 INFO L225 Difference]: With dead ends: 88 [2020-09-25 03:08:18,428 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 03:08:18,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 03:08:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 03:08:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 03:08:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 03:08:18,505 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2020-09-25 03:08:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:18,506 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 03:08:18,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:08:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 03:08:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:08:18,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:18,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:18,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:18,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 03:08:18,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:18,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771576052] [2020-09-25 03:08:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:19,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:19,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:19,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:19,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-25 03:08:19,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:08:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:19,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:19,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:19,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:19,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:08:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:19,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:19,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:19,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 03:08:19,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:19,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:19,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:19,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:19,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 03:08:19,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:08:19,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771576052] [2020-09-25 03:08:19,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:19,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:08:19,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229318780] [2020-09-25 03:08:19,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:08:19,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:19,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:08:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:08:19,287 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 03:08:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:19,395 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-09-25 03:08:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:08:19,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 03:08:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:19,399 INFO L225 Difference]: With dead ends: 83 [2020-09-25 03:08:19,399 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 03:08:19,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 03:08:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 03:08:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 03:08:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-09-25 03:08:19,413 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 34 [2020-09-25 03:08:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:19,413 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-09-25 03:08:19,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:08:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-09-25 03:08:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:08:19,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:19,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:19,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:19,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 03:08:19,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:19,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137387389] [2020-09-25 03:08:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:08:22,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3164 [2020-09-25 03:08:22,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 03:08:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:22,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:22,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 03:08:22,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:22,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 03:08:22,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:08:22,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:22,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:08:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 03:08:22,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137387389] [2020-09-25 03:08:22,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:22,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:08:22,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301346391] [2020-09-25 03:08:22,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:08:22,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:08:22,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:22,957 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-09-25 03:08:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:23,161 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2020-09-25 03:08:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:23,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-25 03:08:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:23,172 INFO L225 Difference]: With dead ends: 75 [2020-09-25 03:08:23,172 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 03:08:23,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:08:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 03:08:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-25 03:08:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 03:08:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2020-09-25 03:08:23,205 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 53 [2020-09-25 03:08:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:23,206 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2020-09-25 03:08:23,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:08:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-09-25 03:08:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 03:08:23,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:23,218 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:23,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:08:23,219 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1817818703, now seen corresponding path program 2 times [2020-09-25 03:08:23,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:23,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928099316] [2020-09-25 03:08:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 03:08:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2779 [2020-09-25 03:08:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 03:08:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:26,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-09-25 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 03:08:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 03:08:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:29,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 03:08:29,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:08:29,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:08:29,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 03:08:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:08:29,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-25 03:08:29,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928099316] [2020-09-25 03:08:29,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:29,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:08:29,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404333807] [2020-09-25 03:08:29,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:29,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:29,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:29,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:29,902 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 6 states. [2020-09-25 03:08:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:30,059 INFO L93 Difference]: Finished difference Result 107 states and 159 transitions. [2020-09-25 03:08:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:30,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-09-25 03:08:30,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:30,063 INFO L225 Difference]: With dead ends: 107 [2020-09-25 03:08:30,064 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 03:08:30,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 03:08:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-09-25 03:08:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 03:08:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2020-09-25 03:08:30,084 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 72 [2020-09-25 03:08:30,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:30,085 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 153 transitions. [2020-09-25 03:08:30,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:30,085 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions. [2020-09-25 03:08:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 03:08:30,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:30,093 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:30,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:08:30,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1454565455, now seen corresponding path program 3 times [2020-09-25 03:08:30,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:30,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939749483] [2020-09-25 03:08:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 03:08:35,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:08:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 03:08:35,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:08:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 03:08:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 03:08:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:35,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:35,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 03:08:40,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:08:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 03:08:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:08:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:08:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 03:08:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 03:08:45,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:08:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:08:45,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:08:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 03:08:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:45,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:46,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:46,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-09-25 03:08:46,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:08:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:46,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-25 03:08:46,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:46,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 03:08:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:08:46,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:08:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 03:08:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 03:08:46,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:08:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:46,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:08:46,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:46,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:08:46,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:08:46,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:46,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 03:08:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:47,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:47,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:47,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 03:08:47,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:08:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:08:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:08:48,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:48,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:08:48,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:48,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:08:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 219 proven. 328 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2020-09-25 03:08:48,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939749483] [2020-09-25 03:08:48,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:48,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:08:48,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938194040] [2020-09-25 03:08:48,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:08:48,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:48,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:08:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:08:48,209 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 12 states. [2020-09-25 03:08:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:48,588 INFO L93 Difference]: Finished difference Result 228 states and 451 transitions. [2020-09-25 03:08:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:08:48,588 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 179 [2020-09-25 03:08:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:48,593 INFO L225 Difference]: With dead ends: 228 [2020-09-25 03:08:48,593 INFO L226 Difference]: Without dead ends: 125 [2020-09-25 03:08:48,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:08:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-25 03:08:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-25 03:08:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 03:08:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 188 transitions. [2020-09-25 03:08:48,617 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 188 transitions. Word has length 179 [2020-09-25 03:08:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:48,618 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 188 transitions. [2020-09-25 03:08:48,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:08:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 188 transitions. [2020-09-25 03:08:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 03:08:48,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:48,620 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:48,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:08:48,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1778048969, now seen corresponding path program 4 times [2020-09-25 03:08:48,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:48,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508739093] [2020-09-25 03:08:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:53,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 03:08:53,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:08:53,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:08:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 03:08:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:53,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:53,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:53,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:53,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:53,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:58,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 03:08:58,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 03:08:58,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:08:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 03:08:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 03:08:59,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 03:08:59,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:08:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 03:08:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:08:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:59,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 03:08:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:08:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:59,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:59,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 03:08:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:59,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:08:59,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:08:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:59,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 03:08:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:59,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:08:59,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:08:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:08:59,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 79 proven. 91 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-09-25 03:08:59,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508739093] [2020-09-25 03:08:59,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:59,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:08:59,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198413641] [2020-09-25 03:08:59,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:08:59,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:08:59,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:08:59,818 INFO L87 Difference]: Start difference. First operand 125 states and 188 transitions. Second operand 13 states. [2020-09-25 03:09:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:00,256 INFO L93 Difference]: Finished difference Result 231 states and 368 transitions. [2020-09-25 03:09:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:09:00,256 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 121 [2020-09-25 03:09:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:00,259 INFO L225 Difference]: With dead ends: 231 [2020-09-25 03:09:00,259 INFO L226 Difference]: Without dead ends: 130 [2020-09-25 03:09:00,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2020-09-25 03:09:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-25 03:09:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2020-09-25 03:09:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 03:09:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-09-25 03:09:00,278 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 121 [2020-09-25 03:09:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:00,279 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-09-25 03:09:00,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:09:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-09-25 03:09:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 03:09:00,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:00,281 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:00,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:00,282 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:00,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1975995462, now seen corresponding path program 5 times [2020-09-25 03:09:00,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:00,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341418390] [2020-09-25 03:09:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 03:09:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:09:05,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 03:09:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 03:09:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:09:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:10,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 03:09:10,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:10,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 03:09:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 03:09:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:09:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:09:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking...