/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_o20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:21:04,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:21:04,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:21:04,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:21:04,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:21:04,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:21:04,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:21:04,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:21:04,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:21:04,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:21:04,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:21:04,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:21:04,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:21:04,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:21:04,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:21:04,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:21:04,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:21:04,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:21:04,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:21:04,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:21:04,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:21:04,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:21:04,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:21:04,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:21:04,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:21:04,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:21:04,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:21:04,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:21:04,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:21:04,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:21:04,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:21:04,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:21:04,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:21:04,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:21:04,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:21:04,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:21:04,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:21:04,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:21:04,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:21:04,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:21:04,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:21:04,710 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 19:21:04,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:21:04,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:21:04,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:21:04,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:21:04,755 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:21:04,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:21:04,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:21:04,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:21:04,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:21:04,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:21:04,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:21:04,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:21:04,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:21:04,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:21:04,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:21:04,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:21:04,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:21:04,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:21:04,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:21:04,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:21:04,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:21:04,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:21:04,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:21:04,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:21:04,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:21:04,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:21:04,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:21:04,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:21:04,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:21:04,762 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:21:05,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:21:05,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:21:05,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:21:05,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:21:05,283 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:21:05,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o20.c [2020-09-24 19:21:05,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b479536a/9fc643dad23740cf9ee9cd699014c576/FLAG0e3b926de [2020-09-24 19:21:05,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:21:05,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o20.c [2020-09-24 19:21:05,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b479536a/9fc643dad23740cf9ee9cd699014c576/FLAG0e3b926de [2020-09-24 19:21:06,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b479536a/9fc643dad23740cf9ee9cd699014c576 [2020-09-24 19:21:06,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:21:06,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:21:06,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:21:06,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:21:06,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:21:06,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5352a789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06, skipping insertion in model container [2020-09-24 19:21:06,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:21:06,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:21:06,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:21:06,541 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:21:06,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:21:06,581 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:21:06,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06 WrapperNode [2020-09-24 19:21:06,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:21:06,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:21:06,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:21:06,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:21:06,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (1/1) ... [2020-09-24 19:21:06,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:21:06,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:21:06,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:21:06,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:21:06,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (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 19:21:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:21:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:21:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 19:21:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:21:06,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 19:21:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:21:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 19:21:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:21:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:21:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:21:06,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:21:06,940 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:21:06,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:21:06 BoogieIcfgContainer [2020-09-24 19:21:06,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:21:06,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:21:06,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:21:06,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:21:06,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:21:06" (1/3) ... [2020-09-24 19:21:06,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e25f57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:21:06, skipping insertion in model container [2020-09-24 19:21:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:21:06" (2/3) ... [2020-09-24 19:21:06,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e25f57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:21:06, skipping insertion in model container [2020-09-24 19:21:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:21:06" (3/3) ... [2020-09-24 19:21:06,954 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o20.c [2020-09-24 19:21:06,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:21:06,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:21:06,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:21:07,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:21:07,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:21:07,026 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:21:07,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:21:07,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:21:07,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:21:07,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:21:07,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:21:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 19:21:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 19:21:07,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:07,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:07,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 19:21:07,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:07,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799678473] [2020-09-24 19:21:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:21:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:21:07,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:21:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:21:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:21:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:07,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:21:07,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:07,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:21:07,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:07,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:07,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:07,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:07,431 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 19:21:07,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799678473] [2020-09-24 19:21:07,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:21:07,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:21:07,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243015142] [2020-09-24 19:21:07,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:21:07,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:07,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:21:07,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:21:07,463 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 19:21:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:07,552 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 19:21:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:21:07,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 19:21:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:07,572 INFO L225 Difference]: With dead ends: 37 [2020-09-24 19:21:07,572 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 19:21:07,577 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 19:21:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 19:21:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 19:21:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 19:21:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 19:21:07,638 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 19:21:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:07,639 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 19:21:07,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:21:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 19:21:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 19:21:07,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:07,642 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 19:21:07,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:21:07,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:07,643 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 19:21:07,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:07,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615255264] [2020-09-24 19:21:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:21:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-24 19:21:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:21:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:21:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:21:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:07,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:21:07,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:07,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 19:21:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:21:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:08,213 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 19:21:08,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615255264] [2020-09-24 19:21:08,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:08,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:21:08,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604370712] [2020-09-24 19:21:08,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:21:08,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:21:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:21:08,218 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 19:21:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:08,291 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 19:21:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:21:08,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 19:21:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:08,294 INFO L225 Difference]: With dead ends: 31 [2020-09-24 19:21:08,294 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 19:21:08,296 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 19:21:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 19:21:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 19:21:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 19:21:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 19:21:08,303 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 19:21:08,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:08,304 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 19:21:08,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:21:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 19:21:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:21:08,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:08,306 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 19:21:08,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:21:08,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:08,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 19:21:08,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:08,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960742220] [2020-09-24 19:21:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:21:08,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-24 19:21:08,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:21:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 19:21:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:21:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:08,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:21:08,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:08,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 19:21:08,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:08,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:08,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:21:08,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:08,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:21:08,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:21:08,998 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 19:21:08,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960742220] [2020-09-24 19:21:08,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:08,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:21:09,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322344733] [2020-09-24 19:21:09,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:21:09,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:09,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:21:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:21:09,003 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 19:21:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:09,106 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 19:21:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:21:09,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 19:21:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:09,110 INFO L225 Difference]: With dead ends: 35 [2020-09-24 19:21:09,110 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 19:21:09,111 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 19:21:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 19:21:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 19:21:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 19:21:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 19:21:09,122 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 19:21:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:09,123 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 19:21:09,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:21:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 19:21:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 19:21:09,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:09,125 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 19:21:09,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:21:09,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:09,126 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 19:21:09,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:09,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794396620] [2020-09-24 19:21:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:21:09,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 19:21:09,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:21:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 19:21:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:21:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:09,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:09,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:09,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 19:21:09,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:09,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:09,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:21:09,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:21:09,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:09,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:21:09,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:09,886 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 19:21:09,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794396620] [2020-09-24 19:21:09,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:09,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:21:09,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803132864] [2020-09-24 19:21:09,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:21:09,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:21:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:21:09,889 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 19:21:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:10,021 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 19:21:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:21:10,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 19:21:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:10,023 INFO L225 Difference]: With dead ends: 39 [2020-09-24 19:21:10,023 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 19:21:10,024 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 19:21:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 19:21:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 19:21:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:21:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 19:21:10,031 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 19:21:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:10,032 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 19:21:10,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:21:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 19:21:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 19:21:10,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:10,034 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 19:21:10,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:21:10,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 19:21:10,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:10,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328280530] [2020-09-24 19:21:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:21:10,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 19:21:10,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:21:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:21:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:21:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:10,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:10,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:10,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 19:21:10,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:10,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:21:10,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:10,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 19:21:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:10,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:11,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:21:11,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:11,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:11,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:11,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:21:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:11,106 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 19:21:11,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328280530] [2020-09-24 19:21:11,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:11,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:21:11,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427849652] [2020-09-24 19:21:11,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:21:11,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:11,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:21:11,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:21:11,110 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 19:21:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:11,356 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 19:21:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:21:11,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 19:21:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:11,359 INFO L225 Difference]: With dead ends: 43 [2020-09-24 19:21:11,359 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 19:21:11,360 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 19:21:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 19:21:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 19:21:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 19:21:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 19:21:11,368 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 19:21:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:11,368 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 19:21:11,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:21:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 19:21:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:21:11,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:11,370 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 19:21:11,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:21:11,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 19:21:11,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:11,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658638109] [2020-09-24 19:21:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:11,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:11,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 19:21:11,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-24 19:21:11,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 19:21:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 19:21:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:21:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:11,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:12,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 19:21:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:12,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 19:21:12,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:12,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:12,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 19:21:12,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:12,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:12,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 19:21:12,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 19:21:12,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:12,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:21:12,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:12,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:21:12,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:13,003 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 19:21:13,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658638109] [2020-09-24 19:21:13,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:13,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:21:13,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801610207] [2020-09-24 19:21:13,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:21:13,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:21:13,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:21:13,007 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 19:21:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:13,271 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 19:21:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:21:13,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 19:21:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:13,274 INFO L225 Difference]: With dead ends: 47 [2020-09-24 19:21:13,274 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 19:21:13,275 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 19:21:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 19:21:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 19:21:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 19:21:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 19:21:13,285 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 19:21:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:13,285 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 19:21:13,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:21:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 19:21:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 19:21:13,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:13,290 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 19:21:13,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:21:13,291 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:13,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:13,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 19:21:13,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:13,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964950091] [2020-09-24 19:21:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:21:13,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-24 19:21:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:21:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 19:21:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:21:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-24 19:21:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:13,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:13,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:14,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:14,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:14,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-24 19:21:14,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:14,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:14,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:14,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 19:21:14,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:14,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:14,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:14,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 19:21:14,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:14,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 19:21:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:15,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:15,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:15,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:15,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 19:21:15,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:15,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:15,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:15,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:15,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:21:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:15,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:21:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:15,515 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 19:21:15,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964950091] [2020-09-24 19:21:15,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:15,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:21:15,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922251847] [2020-09-24 19:21:15,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:21:15,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:15,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:21:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:21:15,520 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 19:21:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:15,843 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 19:21:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:21:15,844 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 19:21:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:15,847 INFO L225 Difference]: With dead ends: 51 [2020-09-24 19:21:15,847 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 19:21:15,848 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 19:21:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 19:21:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 19:21:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 19:21:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 19:21:15,859 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 19:21:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:15,861 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 19:21:15,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:21:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 19:21:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 19:21:15,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:15,862 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 19:21:15,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:21:15,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:15,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:15,866 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 19:21:15,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:15,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216470946] [2020-09-24 19:21:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:16,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:16,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:21:16,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:16,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-24 19:21:16,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 19:21:16,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:21:16,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:21:16,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:16,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:16,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:17,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-24 19:21:17,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-09-24 19:21:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:17,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 19:21:17,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:17,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:18,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 19:21:18,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 19:21:18,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:18,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:21:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:18,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:21:18,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:21:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:18,658 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 19:21:18,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216470946] [2020-09-24 19:21:18,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:18,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 19:21:18,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097493693] [2020-09-24 19:21:18,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 19:21:18,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:18,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 19:21:18,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:21:18,662 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 19:21:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:19,024 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 19:21:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 19:21:19,025 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 19:21:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:19,026 INFO L225 Difference]: With dead ends: 55 [2020-09-24 19:21:19,026 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 19:21:19,028 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 19:21:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 19:21:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 19:21:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 19:21:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 19:21:19,039 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 19:21:19,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:19,039 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 19:21:19,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 19:21:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 19:21:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 19:21:19,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:19,042 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 19:21:19,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:21:19,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 19:21:19,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:19,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780110558] [2020-09-24 19:21:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:19,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 19:21:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-09-24 19:21:19,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 19:21:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 19:21:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:21:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:19,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:19,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:20,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:20,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:20,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-24 19:21:20,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:20,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:20,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 19:21:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:21,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:21,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:21,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-24 19:21:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:21,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-24 19:21:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:21,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 19:21:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:22,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:22,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 19:21:22,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:22,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:22,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:22,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:21:22,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:22,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:22,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:22,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:21:22,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:22,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:22,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:22,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:21:22,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:22,366 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 19:21:22,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780110558] [2020-09-24 19:21:22,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:22,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 19:21:22,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890729448] [2020-09-24 19:21:22,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 19:21:22,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:22,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 19:21:22,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 19:21:22,368 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 19:21:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:22,842 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 19:21:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 19:21:22,842 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 19:21:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:22,844 INFO L225 Difference]: With dead ends: 59 [2020-09-24 19:21:22,844 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 19:21:22,845 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 19:21:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 19:21:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 19:21:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 19:21:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 19:21:22,854 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 19:21:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:22,855 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 19:21:22,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 19:21:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 19:21:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 19:21:22,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:22,856 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 19:21:22,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:21:22,857 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:22,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 19:21:22,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:22,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209099381] [2020-09-24 19:21:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 19:21:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-24 19:21:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:21:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 19:21:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:23,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:24,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:24,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-09-24 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-24 19:21:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:25,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:25,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:25,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-24 19:21:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:25,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:25,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 19:21:25,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 19:21:26,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 19:21:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:26,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:21:26,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:21:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:26,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:21:26,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:26,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:26,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:26,904 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 19:21:26,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209099381] [2020-09-24 19:21:26,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:26,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 19:21:26,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510128916] [2020-09-24 19:21:26,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 19:21:26,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:26,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 19:21:26,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 19:21:26,906 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 19:21:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:27,486 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 19:21:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 19:21:27,486 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 19:21:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:27,487 INFO L225 Difference]: With dead ends: 63 [2020-09-24 19:21:27,488 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:21:27,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 19:21:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:21:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 19:21:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 19:21:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 19:21:27,496 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 19:21:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:27,496 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 19:21:27,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 19:21:27,496 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 19:21:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 19:21:27,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:27,498 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 19:21:27,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:21:27,498 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 19:21:27,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:27,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172651925] [2020-09-24 19:21:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:21:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:28,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:28,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:28,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:29,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:29,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:29,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-24 19:21:29,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:29,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:29,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:29,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:29,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-24 19:21:29,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:30,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-24 19:21:30,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-24 19:21:30,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:31,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:31,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:31,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-24 19:21:31,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:31,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:31,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:31,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:31,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 19:21:31,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:31,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 19:21:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:31,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:31,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:31,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:31,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:21:31,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:31,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:21:31,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:32,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:32,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:32,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:21:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:32,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:32,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:32,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:21:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:32,237 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 19:21:32,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172651925] [2020-09-24 19:21:32,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:32,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 19:21:32,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455714586] [2020-09-24 19:21:32,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 19:21:32,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:32,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 19:21:32,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:21:32,239 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 19:21:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:32,917 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 19:21:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 19:21:32,917 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 19:21:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:32,919 INFO L225 Difference]: With dead ends: 67 [2020-09-24 19:21:32,919 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 19:21:32,921 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 19:21:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 19:21:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 19:21:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 19:21:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 19:21:32,927 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 19:21:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:32,928 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 19:21:32,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 19:21:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 19:21:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 19:21:32,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:32,929 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 19:21:32,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:21:32,930 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:32,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 19:21:32,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:32,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125394317] [2020-09-24 19:21:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:33,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 19:21:33,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:21:33,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 19:21:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 19:21:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 19:21:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:34,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:34,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:34,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:34,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:34,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:35,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:21:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:36,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-24 19:21:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:36,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:36,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:36,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 19:21:36,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:36,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 19:21:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 19:21:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:37,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:38,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 19:21:38,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:38,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:21:38,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:21:38,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:38,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:38,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:21:38,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:38,701 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 19:21:38,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125394317] [2020-09-24 19:21:38,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:38,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 19:21:38,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289901460] [2020-09-24 19:21:38,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 19:21:38,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:38,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 19:21:38,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:21:38,704 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 19:21:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:39,491 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 19:21:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 19:21:39,491 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 19:21:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:39,492 INFO L225 Difference]: With dead ends: 71 [2020-09-24 19:21:39,493 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 19:21:39,494 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 19:21:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 19:21:39,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 19:21:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 19:21:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 19:21:39,510 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 19:21:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:39,511 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 19:21:39,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 19:21:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 19:21:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 19:21:39,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:39,512 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 19:21:39,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:21:39,512 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:39,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 19:21:39,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:39,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084837789] [2020-09-24 19:21:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 19:21:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:21:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:41,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:41,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:21:41,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:21:41,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:21:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:21:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:21:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:21:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:43,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:43,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:43,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-24 19:21:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:44,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:44,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:44,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:44,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-09-24 19:21:44,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:44,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:44,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:44,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:45,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-24 19:21:45,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:45,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:45,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:45,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-24 19:21:45,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:45,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 19:21:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:21:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:46,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:21:46,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 19:21:46,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:21:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:46,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:21:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,565 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 19:21:46,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084837789] [2020-09-24 19:21:46,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:46,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 19:21:46,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671418436] [2020-09-24 19:21:46,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 19:21:46,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:46,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 19:21:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 19:21:46,569 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 19:21:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:47,535 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 19:21:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 19:21:47,535 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 19:21:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:47,536 INFO L225 Difference]: With dead ends: 75 [2020-09-24 19:21:47,536 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 19:21:47,538 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 19:21:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 19:21:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 19:21:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:21:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 19:21:47,556 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 19:21:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:47,556 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 19:21:47,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 19:21:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 19:21:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 19:21:47,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:47,558 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 19:21:47,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:21:47,558 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:47,558 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 19:21:47,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:47,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132720745] [2020-09-24 19:21:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:48,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:48,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:21:48,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:21:48,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 19:21:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 19:21:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:21:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:48,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:48,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:49,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:49,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:21:49,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:49,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:21:49,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 19:21:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 19:21:49,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:49,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:50,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:50,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:21:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:51,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:21:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-09-24 19:21:51,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:21:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:21:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:52,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:52,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:52,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-09-24 19:21:52,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:52,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:53,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:53,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:53,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-24 19:21:53,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:53,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-24 19:21:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-24 19:21:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:54,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:54,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:54,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 19:21:54,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:54,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:54,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:54,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 19:21:54,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:54,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:54,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:54,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 19:21:54,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:55,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:55,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:55,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:55,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:21:55,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:55,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:55,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:21:55,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:55,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:55,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:55,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:55,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:21:55,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:55,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:55,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:55,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:21:55,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:55,553 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 19:21:55,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132720745] [2020-09-24 19:21:55,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:55,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 19:21:55,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104578121] [2020-09-24 19:21:55,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 19:21:55,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 19:21:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 19:21:55,556 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 19:21:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:56,600 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 19:21:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 19:21:56,601 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 19:21:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:56,602 INFO L225 Difference]: With dead ends: 79 [2020-09-24 19:21:56,602 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 19:21:56,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 19:21:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 19:21:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 19:21:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 19:21:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 19:21:56,611 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 19:21:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:56,611 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 19:21:56,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 19:21:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 19:21:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 19:21:56,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:56,613 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 19:21:56,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:21:56,613 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:56,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 19:21:56,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:56,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426501096] [2020-09-24 19:21:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:57,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 19:21:57,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:21:57,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 19:21:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 19:21:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:21:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:57,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:58,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 19:21:58,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 19:21:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:22:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:22:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:01,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:01,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:22:01,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:01,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-09-24 19:22:01,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:22:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:22:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:22:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:02,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:02,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:22:02,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-24 19:22:02,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:22:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:22:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:22:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking...