/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-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:26:38,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:26:38,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:26:38,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:26:38,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:26:38,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:26:38,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:26:38,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:26:38,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:26:38,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:26:38,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:26:38,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:26:38,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:26:38,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:26:38,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:26:38,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:26:38,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:26:38,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:26:38,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:26:38,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:26:38,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:26:38,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:26:38,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:26:38,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:26:38,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:26:38,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:26:38,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:26:38,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:26:38,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:26:38,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:26:38,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:26:38,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:26:38,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:26:38,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:26:38,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:26:38,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:26:38,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:26:38,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:26:38,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:26:38,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:26:38,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:26:38,669 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 20:26:38,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:26:38,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:26:38,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:26:38,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:26:38,719 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:26:38,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:26:38,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:26:38,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:26:38,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:26:38,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:26:38,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:26:38,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:26:38,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:26:38,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:26:38,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:26:38,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:26:38,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:26:38,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:26:38,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:26:38,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:26:38,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:26:38,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:26:38,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:26:38,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:26:38,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:26:38,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:26:38,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:26:38,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:26:38,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:26:38,726 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 20:26:39,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:26:39,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:26:39,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:26:39,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:26:39,192 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:26:39,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-24 20:26:39,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d29b2529/7ddefc808a7a4d9f97bcc140e5b2bc7e/FLAG13b173299 [2020-09-24 20:26:39,810 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:26:39,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-24 20:26:39,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d29b2529/7ddefc808a7a4d9f97bcc140e5b2bc7e/FLAG13b173299 [2020-09-24 20:26:40,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d29b2529/7ddefc808a7a4d9f97bcc140e5b2bc7e [2020-09-24 20:26:40,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:26:40,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:26:40,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:40,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:26:40,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:26:40,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5c9d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40, skipping insertion in model container [2020-09-24 20:26:40,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:26:40,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:26:40,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:40,436 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:26:40,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:40,467 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:26:40,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40 WrapperNode [2020-09-24 20:26:40,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:40,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:26:40,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:26:40,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:26:40,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (1/1) ... [2020-09-24 20:26:40,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:26:40,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:26:40,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:26:40,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:26:40,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (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 20:26:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:26:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:26:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 20:26:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:26:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 20:26:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:26:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 20:26:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:26:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:26:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:26:40,830 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:26:40,830 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:26:40,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:40 BoogieIcfgContainer [2020-09-24 20:26:40,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:26:40,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:26:40,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:26:40,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:26:40,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:26:40" (1/3) ... [2020-09-24 20:26:40,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51faffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:40, skipping insertion in model container [2020-09-24 20:26:40,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:40" (2/3) ... [2020-09-24 20:26:40,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51faffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:40, skipping insertion in model container [2020-09-24 20:26:40,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:40" (3/3) ... [2020-09-24 20:26:40,846 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-24 20:26:40,855 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:26:40,863 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:26:40,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:26:40,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:26:40,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:26:40,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:26:40,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:26:40,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:26:40,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:26:40,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:26:40,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:26:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 20:26:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:26:40,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:40,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:40,950 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:40,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 20:26:40,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:40,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043459306] [2020-09-24 20:26:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:26:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:26:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:26:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:26:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:41,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:41,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:26:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:26:41,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043459306] [2020-09-24 20:26:41,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:26:41,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:26:41,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035220713] [2020-09-24 20:26:41,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:26:41,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:41,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:26:41,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:26:41,422 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 20:26:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:41,507 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 20:26:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:26:41,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:26:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:41,523 INFO L225 Difference]: With dead ends: 37 [2020-09-24 20:26:41,524 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 20:26:41,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:26:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 20:26:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 20:26:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 20:26:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 20:26:41,576 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 20:26:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:41,576 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 20:26:41,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:26:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 20:26:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 20:26:41,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:41,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:41,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:26:41,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 20:26:41,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:41,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589258146] [2020-09-24 20:26:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:41,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:26:41,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 20:26:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:26:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:26:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:41,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:41,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:26:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:42,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 20:26:42,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:42,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:26:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:26:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:26:42,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589258146] [2020-09-24 20:26:42,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:42,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:26:42,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269803883] [2020-09-24 20:26:42,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:26:42,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:42,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:26:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:26:42,179 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 20:26:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:42,252 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 20:26:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:26:42,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 20:26:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:42,254 INFO L225 Difference]: With dead ends: 31 [2020-09-24 20:26:42,255 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 20:26:42,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 20:26:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 20:26:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 20:26:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 20:26:42,264 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 20:26:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:42,265 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 20:26:42,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:26:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 20:26:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 20:26:42,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:42,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:42,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:26:42,267 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 20:26:42,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:42,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145180522] [2020-09-24 20:26:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:26:42,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 20:26:42,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 20:26:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:26:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:42,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:42,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:42,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:42,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:42,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:42,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 20:26:42,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:42,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:42,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:26:42,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:42,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:42,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:42,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:42,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:42,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:26:42,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:26:43,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145180522] [2020-09-24 20:26:43,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:43,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:26:43,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750636233] [2020-09-24 20:26:43,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:26:43,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:26:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:43,024 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 20:26:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:43,133 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 20:26:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:26:43,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 20:26:43,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:43,140 INFO L225 Difference]: With dead ends: 35 [2020-09-24 20:26:43,140 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:26:43,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:26:43,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 20:26:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 20:26:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 20:26:43,148 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 20:26:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:43,148 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 20:26:43,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:26:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 20:26:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 20:26:43,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:43,150 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:43,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:26:43,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 20:26:43,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:43,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053868482] [2020-09-24 20:26:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:26:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 20:26:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:26:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:43,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:43,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:43,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:43,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:43,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:43,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:43,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:26:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 20:26:43,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:26:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:43,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:43,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:43,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:43,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:26:43,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:43,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:43,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:43,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:26:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:43,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:43,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:26:43,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:26:43,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053868482] [2020-09-24 20:26:43,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:43,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:43,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172836708] [2020-09-24 20:26:43,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:43,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:43,970 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 20:26:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:44,112 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 20:26:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:26:44,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 20:26:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:44,114 INFO L225 Difference]: With dead ends: 39 [2020-09-24 20:26:44,114 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 20:26:44,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:26:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 20:26:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 20:26:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 20:26:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 20:26:44,123 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 20:26:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:44,124 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 20:26:44,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 20:26:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:26:44,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:44,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:44,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:26:44,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:44,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 20:26:44,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:44,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66690638] [2020-09-24 20:26:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:44,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:44,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:44,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:44,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 20:26:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:26:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:26:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:44,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:44,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:44,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:44,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:44,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 20:26:44,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:44,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:26:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 20:26:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:26:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:45,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 20:26:45,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:45,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:26:45,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:45,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:26:45,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 20:26:45,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66690638] [2020-09-24 20:26:45,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:45,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:26:45,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998163515] [2020-09-24 20:26:45,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:26:45,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:45,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:26:45,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:26:45,223 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 20:26:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:45,480 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 20:26:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:45,481 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 20:26:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:45,483 INFO L225 Difference]: With dead ends: 43 [2020-09-24 20:26:45,483 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 20:26:45,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:26:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 20:26:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 20:26:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:26:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 20:26:45,491 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 20:26:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:45,491 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 20:26:45,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:26:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 20:26:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:26:45,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:45,494 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:45,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:26:45,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 20:26:45,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:45,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353421683] [2020-09-24 20:26:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:26:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-24 20:26:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:26:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:26:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:45,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:45,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:26:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-24 20:26:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:26:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:46,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 20:26:46,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:26:46,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 20:26:46,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:26:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:26:46,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:46,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:46,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:26:46,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:47,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:26:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 20:26:47,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353421683] [2020-09-24 20:26:47,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:47,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:26:47,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720300469] [2020-09-24 20:26:47,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:26:47,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:47,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:26:47,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:26:47,099 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 20:26:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:47,354 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 20:26:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:26:47,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 20:26:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:47,356 INFO L225 Difference]: With dead ends: 47 [2020-09-24 20:26:47,356 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:26:47,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:26:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 20:26:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:26:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 20:26:47,364 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 20:26:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:47,364 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 20:26:47,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:26:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 20:26:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:26:47,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:47,366 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:47,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:26:47,366 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 20:26:47,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:47,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959999246] [2020-09-24 20:26:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 20:26:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-24 20:26:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:26:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:47,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:26:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-24 20:26:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:26:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:26:48,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-24 20:26:48,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:26:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:49,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:49,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 20:26:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:49,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:26:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 20:26:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:26:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:49,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:49,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:26:49,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:49,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:49,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:26:49,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:49,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:49,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:49,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:49,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:26:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 20:26:49,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959999246] [2020-09-24 20:26:49,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:49,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:49,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153294192] [2020-09-24 20:26:49,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:49,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:49,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:49,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:49,602 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 20:26:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:49,950 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 20:26:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 20:26:49,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 20:26:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:49,952 INFO L225 Difference]: With dead ends: 51 [2020-09-24 20:26:49,952 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 20:26:49,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:26:49,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 20:26:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 20:26:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:26:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 20:26:49,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 20:26:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:49,968 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 20:26:49,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 20:26:49,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 20:26:49,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:49,973 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:49,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:49,974 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:49,974 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 20:26:49,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:49,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577487352] [2020-09-24 20:26:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 20:26:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-24 20:26:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:26:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:26:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:50,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:50,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:50,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:50,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:51,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:51,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:26:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-24 20:26:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:26:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:51,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:51,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:51,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:26:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-24 20:26:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:26:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:52,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:52,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:26:52,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 20:26:52,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:26:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:52,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:52,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:52,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:52,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 20:26:52,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:52,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:52,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:26:52,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 20:26:52,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:26:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:52,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:52,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 20:26:52,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 20:26:52,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:52,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:52,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:52,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:52,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:26:52,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 20:26:52,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577487352] [2020-09-24 20:26:52,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:52,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 20:26:52,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745110153] [2020-09-24 20:26:52,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 20:26:52,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:52,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 20:26:52,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:26:52,816 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 20:26:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:53,230 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 20:26:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:26:53,230 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 20:26:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:53,232 INFO L225 Difference]: With dead ends: 55 [2020-09-24 20:26:53,232 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:26:53,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:26:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:26:53,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 20:26:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:26:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 20:26:53,245 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 20:26:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:53,247 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 20:26:53,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 20:26:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 20:26:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:26:53,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:53,250 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:53,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:53,252 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:53,252 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 20:26:53,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:53,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166230728] [2020-09-24 20:26:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:54,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 20:26:54,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-09-24 20:26:54,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:26:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 20:26:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:54,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:54,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:26:54,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-24 20:26:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:26:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:26:55,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-24 20:26:55,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:26:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:26:55,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-24 20:26:55,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:26:55,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:26:56,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 20:26:56,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:26:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:56,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 20:26:56,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:56,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:56,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:26:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 20:26:56,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:26:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:26:56,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:26:56,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:26:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 20:26:56,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:26:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:56,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:26:56,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 20:26:56,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166230728] [2020-09-24 20:26:56,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:56,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 20:26:56,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012332274] [2020-09-24 20:26:56,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 20:26:56,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:56,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 20:26:56,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:56,773 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 20:26:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:57,272 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 20:26:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:26:57,273 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 20:26:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:57,275 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:26:57,276 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 20:26:57,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 20:26:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 20:26:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 20:26:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:26:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 20:26:57,283 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 20:26:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:57,284 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 20:26:57,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 20:26:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 20:26:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 20:26:57,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:57,285 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:57,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:57,286 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:57,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 20:26:57,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:57,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680964767] [2020-09-24 20:26:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:58,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:58,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 20:26:58,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-09-24 20:26:58,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 20:26:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:58,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:59,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:59,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 20:26:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-09-24 20:26:59,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 20:26:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:59,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:59,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:59,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:26:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-24 20:26:59,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:26:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:27:00,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-24 20:27:00,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:27:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:27:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:00,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:27:00,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-24 20:27:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:27:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:00,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:01,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:01,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:01,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 20:27:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:27:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:27:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:01,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:01,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:27:01,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 20:27:01,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:01,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:01,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:27:01,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 20:27:01,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:27:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:27:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:01,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:01,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:27:01,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:27:01,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:01,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:27:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:01,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:01,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:27:01,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:27:01,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:01,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:27:01,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:27:01,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:01,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:01,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:27:01,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:27:01,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:27:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:27:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 20:27:01,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680964767] [2020-09-24 20:27:01,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:01,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:27:01,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081675873] [2020-09-24 20:27:01,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:27:01,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:01,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:27:01,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:27:01,908 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 20:27:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:02,462 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 20:27:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 20:27:02,463 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 20:27:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:02,464 INFO L225 Difference]: With dead ends: 63 [2020-09-24 20:27:02,464 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 20:27:02,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 20:27:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 20:27:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 20:27:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 20:27:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 20:27:02,472 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 20:27:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:02,473 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 20:27:02,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:27:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 20:27:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 20:27:02,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:02,474 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:02,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:27:02,475 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 20:27:02,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:02,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929698075] [2020-09-24 20:27:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:03,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:27:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-09-24 20:27:03,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:27:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 20:27:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:27:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:04,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:04,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:27:04,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:04,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-09-24 20:27:04,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:27:04,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:04,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:04,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 20:27:04,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-24 20:27:04,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:27:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 20:27:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:27:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-24 20:27:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:27:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:06,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:06,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:27:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-24 20:27:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:27:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:27:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:27:06,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:06,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:06,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:27:06,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-24 20:27:06,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:27:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:06,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:06,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:06,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:27:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:06,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:06,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:27:06,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 20:27:06,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:06,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:06,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:07,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:27:07,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:07,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 20:27:07,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:27:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:27:07,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:07,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:27:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:27:07,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:27:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:27:07,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:27:07,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:27:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:27:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:27:07,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:27:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:27:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:27:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 20:27:07,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929698075] [2020-09-24 20:27:07,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:07,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 20:27:07,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275230327] [2020-09-24 20:27:07,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 20:27:07,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:07,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 20:27:07,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:27:07,529 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 20:27:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:08,242 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 20:27:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 20:27:08,243 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 20:27:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:08,244 INFO L225 Difference]: With dead ends: 67 [2020-09-24 20:27:08,244 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:27:08,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 20:27:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:27:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 20:27:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:27:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 20:27:08,251 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 20:27:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:08,252 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 20:27:08,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 20:27:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 20:27:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 20:27:08,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:08,253 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:08,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:27:08,254 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:08,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 20:27:08,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:08,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998618334] [2020-09-24 20:27:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:27:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:10,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:10,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 20:27:10,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-09-24 20:27:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 20:27:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 20:27:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:27:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:11,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:11,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 20:27:11,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-24 20:27:11,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:27:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 20:27:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:12,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:12,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:27:12,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-24 20:27:12,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:27:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:12,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:12,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:27:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-24 20:27:12,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:27:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:27:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:27:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 20:27:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:27:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:13,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:13,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:13,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 20:27:13,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:27:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:27:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:27:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 20:27:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:13,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:27:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 20:27:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:27:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:27:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:13,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:13,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:13,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:27:13,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:27:13,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:27:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:14,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:14,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:27:14,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 20:27:14,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:27:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:27:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:14,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:27:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:27:14,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:27:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:27:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 20:27:14,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998618334] [2020-09-24 20:27:14,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:14,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 20:27:14,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949599428] [2020-09-24 20:27:14,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 20:27:14,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:14,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 20:27:14,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:27:14,213 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 20:27:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:15,042 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 20:27:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 20:27:15,042 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 20:27:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:15,044 INFO L225 Difference]: With dead ends: 71 [2020-09-24 20:27:15,044 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 20:27:15,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:27:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 20:27:15,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 20:27:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 20:27:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 20:27:15,059 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 20:27:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:15,059 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 20:27:15,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 20:27:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 20:27:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 20:27:15,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:15,061 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:15,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:27:15,061 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 20:27:15,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:15,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803886786] [2020-09-24 20:27:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 20:27:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-09-24 20:27:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:27:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:27:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:27:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:17,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 20:27:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:18,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:18,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 20:27:18,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-09-24 20:27:18,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 20:27:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 20:27:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:19,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:27:19,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 20:27:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-24 20:27:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:27:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 20:27:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:20,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:20,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:27:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:21,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:27:21,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-24 20:27:21,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:27:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:27:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:21,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:27:21,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 20:27:21,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:27:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:21,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-24 20:27:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:27:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:27:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:21,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:27:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 20:27:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:22,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:22,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:27:22,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 20:27:22,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:27:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:27:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:22,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:22,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:27:22,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:27:22,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:27:22,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:22,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:22,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:27:22,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:27:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:22,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:27:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:27:22,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:27:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:27:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 20:27:22,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803886786] [2020-09-24 20:27:22,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:22,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 20:27:22,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156821578] [2020-09-24 20:27:22,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 20:27:22,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 20:27:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 20:27:22,593 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 20:27:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:23,578 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 20:27:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 20:27:23,579 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 20:27:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:23,580 INFO L225 Difference]: With dead ends: 75 [2020-09-24 20:27:23,580 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:27:23,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 20:27:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:27:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 20:27:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 20:27:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 20:27:23,598 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 20:27:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:23,599 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 20:27:23,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 20:27:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 20:27:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 20:27:23,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:23,604 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:23,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:27:23,604 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:23,604 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 20:27:23,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:23,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981041835] [2020-09-24 20:27:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:25,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:25,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 20:27:25,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-09-24 20:27:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 20:27:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 20:27:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:27:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:25,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:25,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:25,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:25,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:25,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:25,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:26,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:26,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 20:27:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:27,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 20:27:27,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:27,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-24 20:27:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:27:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 20:27:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:28,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:28,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 20:27:28,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-09-24 20:27:28,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 20:27:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 20:27:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:27:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:30,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:30,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 20:27:30,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-24 20:27:30,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:27:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:30,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 20:27:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:30,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:30,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:27:30,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 20:27:30,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:27:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:31,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:27:31,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:31,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-24 20:27:31,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:27:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:27:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:31,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:31,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:27:31,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:31,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 20:27:31,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:27:31,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:31,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:31,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:31,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 20:27:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:27:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:27:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:27:32,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 20:27:32,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:27:32,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:27:32,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:27:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:27:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:32,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:27:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:27:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:27:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 20:27:32,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:27:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:27:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:27:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:27:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:27:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:27:32,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:27:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:27:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 20:27:32,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981041835] [2020-09-24 20:27:32,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:32,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 20:27:32,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507309886] [2020-09-24 20:27:32,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 20:27:32,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:32,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 20:27:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 20:27:32,630 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 20:27:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:33,705 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 20:27:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 20:27:33,705 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 20:27:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:33,707 INFO L225 Difference]: With dead ends: 79 [2020-09-24 20:27:33,707 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 20:27:33,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 20:27:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 20:27:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 20:27:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 20:27:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 20:27:33,716 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 20:27:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:33,717 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 20:27:33,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 20:27:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 20:27:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 20:27:33,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:33,718 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:33,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:27:33,719 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 20:27:33,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:33,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092196172] [2020-09-24 20:27:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking...