/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=BIGGEST --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/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:56,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:56,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:56,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:56,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:56,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:56,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:56,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:56,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:56,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:56,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:56,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:56,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:56,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:56,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:56,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:56,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:56,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:56,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:56,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:56,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:56,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:56,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:56,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:56,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:56,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:56,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:56,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:56,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:56,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:56,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:56,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:56,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:56,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:56,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:56,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:56,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:56,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:56,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:56,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:56,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:56,145 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 [2020-09-24 20:22:56,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:56,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:56,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:56,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:56,174 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:56,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:56,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:56,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:56,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:56,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:56,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:56,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:56,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:56,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:56,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:56,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:56,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:56,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:56,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:56,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:56,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:56,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:56,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:56,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:56,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:56,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:56,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:56,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:56,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:56,180 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:22:56,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:56,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:56,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:56,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:56,705 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:56,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-24 20:22:56,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5822c5cae/4c043d5a8b754500ba907c5f701822a9/FLAG99ca8c0cb [2020-09-24 20:22:57,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:57,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-24 20:22:57,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5822c5cae/4c043d5a8b754500ba907c5f701822a9/FLAG99ca8c0cb [2020-09-24 20:22:57,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5822c5cae/4c043d5a8b754500ba907c5f701822a9 [2020-09-24 20:22:57,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:57,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:57,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:57,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:57,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:57,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:57" (1/1) ... [2020-09-24 20:22:57,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6d277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:57, skipping insertion in model container [2020-09-24 20:22:57,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:57" (1/1) ... [2020-09-24 20:22:57,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:57,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:58,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:58,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:58,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:58,111 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:58,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58 WrapperNode [2020-09-24 20:22:58,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:58,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:58,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:58,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:58,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (1/1) ... [2020-09-24 20:22:58,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:58,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:58,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:58,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:58,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (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 [2020-09-24 20:22:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:58,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:58,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-24 20:22:58,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:58,329 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-24 20:22:58,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:58,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:58,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:58,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:58,550 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:58,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:58 BoogieIcfgContainer [2020-09-24 20:22:58,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:58,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:58,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:58,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:58,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:57" (1/3) ... [2020-09-24 20:22:58,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f304afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:58, skipping insertion in model container [2020-09-24 20:22:58,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:58" (2/3) ... [2020-09-24 20:22:58,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f304afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:58, skipping insertion in model container [2020-09-24 20:22:58,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:58" (3/3) ... [2020-09-24 20:22:58,565 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-24 20:22:58,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:58,631 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:58,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:58,735 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:58,735 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:58,736 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:58,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:58,736 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:58,736 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:58,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:58,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-24 20:22:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 20:22:58,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:58,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:58,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:58,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-24 20:22:58,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:58,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210299023] [2020-09-24 20:22:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 20:22:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 20:22:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:22:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:22:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:59,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:59,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:59,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:22:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:22:59,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:22:59,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:59,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210299023] [2020-09-24 20:22:59,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:59,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:22:59,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080096033] [2020-09-24 20:22:59,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:22:59,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:22:59,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:22:59,351 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-24 20:22:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:59,552 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-24 20:22:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:22:59,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-24 20:22:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:59,568 INFO L225 Difference]: With dead ends: 50 [2020-09-24 20:22:59,568 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 20:22:59,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:22:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 20:22:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-24 20:22:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 20:22:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-24 20:22:59,629 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-24 20:22:59,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:59,629 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-24 20:22:59,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:22:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-24 20:22:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 20:22:59,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:59,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:59,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:59,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:59,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-24 20:22:59,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:59,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187307487] [2020-09-24 20:22:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:22:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 20:22:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:22:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:22:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:59,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:59,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:59,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:22:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:22:59,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:59,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:59,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187307487] [2020-09-24 20:22:59,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:59,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:22:59,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651116017] [2020-09-24 20:22:59,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:22:59,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:59,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:22:59,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:22:59,885 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-24 20:23:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:00,042 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-24 20:23:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:00,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-24 20:23:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:00,045 INFO L225 Difference]: With dead ends: 39 [2020-09-24 20:23:00,045 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 20:23:00,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 20:23:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-24 20:23:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 20:23:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-24 20:23:00,055 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-24 20:23:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:00,056 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-24 20:23:00,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-24 20:23:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:23:00,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:00,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:23:00,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:00,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:00,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-24 20:23:00,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:00,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880433293] [2020-09-24 20:23:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:23:00,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-24 20:23:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:23:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:00,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:00,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:00,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 20:23:00,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:00,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:00,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:23:00,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:01,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880433293] [2020-09-24 20:23:01,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:01,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:01,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381130575] [2020-09-24 20:23:01,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:01,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:01,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:01,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:01,024 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 11 states. [2020-09-24 20:23:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:01,317 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-09-24 20:23:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:23:01,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-09-24 20:23:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:01,320 INFO L225 Difference]: With dead ends: 51 [2020-09-24 20:23:01,320 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 20:23:01,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:23:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 20:23:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-24 20:23:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 20:23:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-09-24 20:23:01,334 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2020-09-24 20:23:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:01,334 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-09-24 20:23:01,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-09-24 20:23:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 20:23:01,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,337 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:23:01,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:01,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1670083565, now seen corresponding path program 1 times [2020-09-24 20:23:01,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634850905] [2020-09-24 20:23:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 20:23:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-09-24 20:23:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:23:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:02,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:03,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-09-24 20:23:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:23:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:03,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:23:03,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:03,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634850905] [2020-09-24 20:23:03,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:03,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:03,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583716888] [2020-09-24 20:23:03,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:03,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:03,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:03,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:03,226 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 11 states. [2020-09-24 20:23:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:03,517 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2020-09-24 20:23:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:23:03,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 20:23:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:03,525 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:23:03,525 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:23:03,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:23:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:23:03,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-09-24 20:23:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 20:23:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2020-09-24 20:23:03,556 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 37 [2020-09-24 20:23:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:03,557 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2020-09-24 20:23:03,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2020-09-24 20:23:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 20:23:03,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:03,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:23:03,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:03,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:03,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 2 times [2020-09-24 20:23:03,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:03,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546872262] [2020-09-24 20:23:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 20:23:04,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-09-24 20:23:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:23:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:23:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:04,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:04,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 20:23:04,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:23:04,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:04,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:23:04,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:04,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546872262] [2020-09-24 20:23:04,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:04,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:23:04,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485363014] [2020-09-24 20:23:04,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:23:04,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:04,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:23:04,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:04,786 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand 12 states. [2020-09-24 20:23:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:05,125 INFO L93 Difference]: Finished difference Result 67 states and 93 transitions. [2020-09-24 20:23:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:23:05,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-24 20:23:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:05,132 INFO L225 Difference]: With dead ends: 67 [2020-09-24 20:23:05,132 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 20:23:05,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:23:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 20:23:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-09-24 20:23:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 20:23:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2020-09-24 20:23:05,149 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 37 [2020-09-24 20:23:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:05,149 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2020-09-24 20:23:05,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:23:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2020-09-24 20:23:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:23:05,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:05,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 20:23:05,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:05,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash -693972664, now seen corresponding path program 1 times [2020-09-24 20:23:05,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:05,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873009199] [2020-09-24 20:23:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:23:05,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-09-24 20:23:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:23:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:05,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:05,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:05,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:06,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:06,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 20:23:06,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:23:06,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:06,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873009199] [2020-09-24 20:23:06,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:06,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:23:06,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484736555] [2020-09-24 20:23:06,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:23:06,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:23:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:06,344 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand 12 states. [2020-09-24 20:23:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:06,667 INFO L93 Difference]: Finished difference Result 75 states and 112 transitions. [2020-09-24 20:23:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:23:06,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-09-24 20:23:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:06,671 INFO L225 Difference]: With dead ends: 75 [2020-09-24 20:23:06,671 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 20:23:06,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:23:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 20:23:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-09-24 20:23:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 20:23:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2020-09-24 20:23:06,698 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 38 [2020-09-24 20:23:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:06,698 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2020-09-24 20:23:06,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:23:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2020-09-24 20:23:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:23:06,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:06,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 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] [2020-09-24 20:23:06,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:06,707 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:06,708 INFO L82 PathProgramCache]: Analyzing trace with hash -111543021, now seen corresponding path program 3 times [2020-09-24 20:23:06,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:06,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842581774] [2020-09-24 20:23:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:23:11,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:23:11,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:23:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:11,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:11,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:23:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:16,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:23:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:23:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 20:23:17,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:17,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:17,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:23:17,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842581774] [2020-09-24 20:23:17,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:17,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:23:17,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308112133] [2020-09-24 20:23:17,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:23:17,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:23:17,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:23:17,771 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand 18 states. [2020-09-24 20:23:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:18,486 INFO L93 Difference]: Finished difference Result 115 states and 190 transitions. [2020-09-24 20:23:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:23:18,491 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-09-24 20:23:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:18,493 INFO L225 Difference]: With dead ends: 115 [2020-09-24 20:23:18,497 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 20:23:18,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:23:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 20:23:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-24 20:23:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 20:23:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2020-09-24 20:23:18,535 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 54 [2020-09-24 20:23:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:18,537 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2020-09-24 20:23:18,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:23:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2020-09-24 20:23:18,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:23:18,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:18,544 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-09-24 20:23:18,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:18,544 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:18,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:18,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 2 times [2020-09-24 20:23:18,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:18,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505359602] [2020-09-24 20:23:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:23:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4833 [2020-09-24 20:23:28,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:23:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:28,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:28,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 20:23:28,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:28,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:28,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:28,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:28,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:28,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:28,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:28,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 20:23:28,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505359602] [2020-09-24 20:23:28,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:28,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:23:28,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260009828] [2020-09-24 20:23:28,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:23:28,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:28,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:23:28,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:23:28,998 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand 15 states. [2020-09-24 20:23:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:30,120 INFO L93 Difference]: Finished difference Result 155 states and 214 transitions. [2020-09-24 20:23:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 20:23:30,121 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-24 20:23:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:30,125 INFO L225 Difference]: With dead ends: 155 [2020-09-24 20:23:30,125 INFO L226 Difference]: Without dead ends: 149 [2020-09-24 20:23:30,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=1487, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 20:23:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-24 20:23:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 95. [2020-09-24 20:23:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 20:23:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2020-09-24 20:23:30,160 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 56 [2020-09-24 20:23:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:30,160 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2020-09-24 20:23:30,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:23:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2020-09-24 20:23:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:23:30,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:30,162 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 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] [2020-09-24 20:23:30,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:30,163 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 2 times [2020-09-24 20:23:30,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:30,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907511591] [2020-09-24 20:23:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:32,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:32,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-09-24 20:23:32,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:23:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:23:33,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-09-24 20:23:33,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:23:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 20:23:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:33,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:33,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:23:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:33,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:33,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:23:33,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907511591] [2020-09-24 20:23:33,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:33,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:23:33,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376103637] [2020-09-24 20:23:33,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:23:33,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:23:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:33,782 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand 16 states. [2020-09-24 20:23:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:34,506 INFO L93 Difference]: Finished difference Result 125 states and 175 transitions. [2020-09-24 20:23:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:23:34,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 20:23:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:34,513 INFO L225 Difference]: With dead ends: 125 [2020-09-24 20:23:34,514 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 20:23:34,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2020-09-24 20:23:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 20:23:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2020-09-24 20:23:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-24 20:23:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 145 transitions. [2020-09-24 20:23:34,542 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 145 transitions. Word has length 53 [2020-09-24 20:23:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:34,542 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 145 transitions. [2020-09-24 20:23:34,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:23:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 145 transitions. [2020-09-24 20:23:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:23:34,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:34,544 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 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] [2020-09-24 20:23:34,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:23:34,546 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash 847598467, now seen corresponding path program 4 times [2020-09-24 20:23:34,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:34,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357650335] [2020-09-24 20:23:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:23:37,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2967 [2020-09-24 20:23:37,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:37,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:23:39,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:39,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-09-24 20:23:39,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:23:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:39,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:23:39,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:39,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:39,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:39,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:39,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 20:23:39,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357650335] [2020-09-24 20:23:39,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:39,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:39,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490457807] [2020-09-24 20:23:39,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:39,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:39,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:39,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:39,866 INFO L87 Difference]: Start difference. First operand 103 states and 145 transitions. Second operand 14 states. [2020-09-24 20:23:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:40,313 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2020-09-24 20:23:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:23:40,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-24 20:23:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:40,319 INFO L225 Difference]: With dead ends: 151 [2020-09-24 20:23:40,319 INFO L226 Difference]: Without dead ends: 145 [2020-09-24 20:23:40,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:23:40,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-24 20:23:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2020-09-24 20:23:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-24 20:23:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 182 transitions. [2020-09-24 20:23:40,335 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 182 transitions. Word has length 54 [2020-09-24 20:23:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:40,335 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 182 transitions. [2020-09-24 20:23:40,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 182 transitions. [2020-09-24 20:23:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 20:23:40,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:40,337 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 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] [2020-09-24 20:23:40,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:23:40,338 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 5 times [2020-09-24 20:23:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:40,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764906763] [2020-09-24 20:23:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 20:23:44,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4284 [2020-09-24 20:23:44,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 20:23:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:44,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking...