/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:09:45,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:09:45,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:09:45,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:09:45,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:09:45,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:09:45,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:09:45,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:09:45,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:09:45,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:09:45,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:09:45,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:09:45,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:09:45,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:09:45,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:09:45,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:09:45,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:09:45,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:09:45,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:09:45,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:09:45,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:09:45,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:09:45,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:09:45,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:09:45,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:09:45,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:09:45,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:09:45,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:09:45,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:09:45,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:09:45,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:09:45,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:09:45,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:09:45,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:09:45,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:09:45,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:09:45,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:09:45,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:09:45,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:09:45,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:09:45,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:09:45,767 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 [2020-10-13 14:09:45,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:09:45,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:09:45,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:09:45,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:09:45,791 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:09:45,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:09:45,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:09:45,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:09:45,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:09:45,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:09:45,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:09:45,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:09:45,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:09:45,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:09:45,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:09:45,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:09:45,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:09:45,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:09:45,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:09:45,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:09:45,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:09:45,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:09:45,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:09:45,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:09:45,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:09:45,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:09:45,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:09:45,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:09:45,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:09:45,796 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:09:46,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:09:46,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:09:46,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:09:46,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:09:46,126 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:09:46,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:09:46,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b073918ef/590e03aa9d7649c6943ad695854360f6/FLAG812d395f1 [2020-10-13 14:09:46,696 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:09:46,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:09:46,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b073918ef/590e03aa9d7649c6943ad695854360f6/FLAG812d395f1 [2020-10-13 14:09:47,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b073918ef/590e03aa9d7649c6943ad695854360f6 [2020-10-13 14:09:47,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:09:47,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:09:47,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:09:47,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:09:47,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:09:47,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9260ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47, skipping insertion in model container [2020-10-13 14:09:47,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:09:47,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:09:47,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:09:47,755 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:09:47,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:09:47,912 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:09:47,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47 WrapperNode [2020-10-13 14:09:47,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:09:47,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:09:47,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:09:47,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:09:47,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:47,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (1/1) ... [2020-10-13 14:09:48,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:09:48,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:09:48,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:09:48,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:09:48,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (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 [2020-10-13 14:09:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:09:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:09:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:09:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:09:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:09:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:09:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:09:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:09:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:09:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:09:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:09:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:09:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:09:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:09:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:09:49,139 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:09:49,139 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:09:49,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:09:49 BoogieIcfgContainer [2020-10-13 14:09:49,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:09:49,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:09:49,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:09:49,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:09:49,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:09:47" (1/3) ... [2020-10-13 14:09:49,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad7db39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:09:49, skipping insertion in model container [2020-10-13 14:09:49,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:47" (2/3) ... [2020-10-13 14:09:49,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad7db39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:09:49, skipping insertion in model container [2020-10-13 14:09:49,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:09:49" (3/3) ... [2020-10-13 14:09:49,154 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:09:49,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:09:49,185 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 14:09:49,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 14:09:49,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:09:49,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:09:49,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:09:49,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:09:49,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:09:49,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:09:49,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:09:49,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:09:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-13 14:09:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:09:49,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:49,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:09:49,276 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:49,281 INFO L82 PathProgramCache]: Analyzing trace with hash -932481986, now seen corresponding path program 1 times [2020-10-13 14:09:49,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:49,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627350786] [2020-10-13 14:09:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:09:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:09:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:09:54,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:09:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:09:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:09:54,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:09:55,061 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:09:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:09:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:55,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:55,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:09:55,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:09:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:09:55,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:09:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:09:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:09:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:09:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:09:55,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627350786] [2020-10-13 14:09:55,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:09:55,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:09:55,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059704139] [2020-10-13 14:09:55,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:09:55,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:09:55,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:09:55,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:09:55,155 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 7 states. [2020-10-13 14:09:55,507 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:09:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:09:57,209 INFO L93 Difference]: Finished difference Result 852 states and 1363 transitions. [2020-10-13 14:09:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:09:57,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-13 14:09:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:09:57,232 INFO L225 Difference]: With dead ends: 852 [2020-10-13 14:09:57,232 INFO L226 Difference]: Without dead ends: 679 [2020-10-13 14:09:57,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:09:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2020-10-13 14:09:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 341. [2020-10-13 14:09:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-13 14:09:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 456 transitions. [2020-10-13 14:09:57,320 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 456 transitions. Word has length 51 [2020-10-13 14:09:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:09:57,320 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 456 transitions. [2020-10-13 14:09:57,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:09:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 456 transitions. [2020-10-13 14:09:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:09:57,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:57,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:09:57,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:09:57,325 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1505835367, now seen corresponding path program 1 times [2020-10-13 14:09:57,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:57,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230397692] [2020-10-13 14:09:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:02,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:10:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:10:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:10:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:10:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:10:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:10:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:02,592 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:02,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:10:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:02,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230397692] [2020-10-13 14:10:02,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:02,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:10:02,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191195010] [2020-10-13 14:10:02,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:10:02,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:02,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:10:02,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:10:02,643 INFO L87 Difference]: Start difference. First operand 341 states and 456 transitions. Second operand 7 states. [2020-10-13 14:10:02,889 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:10:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:04,042 INFO L93 Difference]: Finished difference Result 1418 states and 1990 transitions. [2020-10-13 14:10:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:10:04,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-13 14:10:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:04,051 INFO L225 Difference]: With dead ends: 1418 [2020-10-13 14:10:04,052 INFO L226 Difference]: Without dead ends: 1240 [2020-10-13 14:10:04,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:10:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-13 14:10:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 527. [2020-10-13 14:10:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-10-13 14:10:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 733 transitions. [2020-10-13 14:10:04,108 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 733 transitions. Word has length 52 [2020-10-13 14:10:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:04,109 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 733 transitions. [2020-10-13 14:10:04,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:10:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 733 transitions. [2020-10-13 14:10:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:10:04,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:04,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:04,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:10:04,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1504184435, now seen corresponding path program 1 times [2020-10-13 14:10:04,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:04,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210221136] [2020-10-13 14:10:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:09,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:09,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:10:09,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:10:09,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:10:09,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:09,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:10:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:10:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:10:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:09,478 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:09,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:09,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:09,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:10:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:09,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210221136] [2020-10-13 14:10:09,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:09,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:10:09,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627070949] [2020-10-13 14:10:09,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:10:09,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:10:09,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:10:09,518 INFO L87 Difference]: Start difference. First operand 527 states and 733 transitions. Second operand 9 states. [2020-10-13 14:10:09,782 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:10:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:10,918 INFO L93 Difference]: Finished difference Result 2029 states and 2958 transitions. [2020-10-13 14:10:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:10:10,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-13 14:10:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:10,928 INFO L225 Difference]: With dead ends: 2029 [2020-10-13 14:10:10,929 INFO L226 Difference]: Without dead ends: 1710 [2020-10-13 14:10:10,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:10:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-10-13 14:10:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 539. [2020-10-13 14:10:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-13 14:10:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 741 transitions. [2020-10-13 14:10:10,987 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 741 transitions. Word has length 52 [2020-10-13 14:10:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:10,988 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 741 transitions. [2020-10-13 14:10:10,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:10:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 741 transitions. [2020-10-13 14:10:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:10:10,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:10,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:10,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:10:10,992 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1269715700, now seen corresponding path program 1 times [2020-10-13 14:10:10,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:10,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273162523] [2020-10-13 14:10:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:16,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:16,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:10:16,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:10:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:10:16,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:10:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:10:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:10:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:16,208 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:16,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:10:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:16,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273162523] [2020-10-13 14:10:16,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:16,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:10:16,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23583246] [2020-10-13 14:10:16,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:10:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:10:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:10:16,248 INFO L87 Difference]: Start difference. First operand 539 states and 741 transitions. Second operand 7 states. [2020-10-13 14:10:16,439 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:10:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:17,552 INFO L93 Difference]: Finished difference Result 1732 states and 2443 transitions. [2020-10-13 14:10:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:10:17,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-13 14:10:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:17,560 INFO L225 Difference]: With dead ends: 1732 [2020-10-13 14:10:17,561 INFO L226 Difference]: Without dead ends: 1461 [2020-10-13 14:10:17,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:10:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-10-13 14:10:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 636. [2020-10-13 14:10:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-13 14:10:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 887 transitions. [2020-10-13 14:10:17,629 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 887 transitions. Word has length 52 [2020-10-13 14:10:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:17,630 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 887 transitions. [2020-10-13 14:10:17,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:10:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 887 transitions. [2020-10-13 14:10:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:17,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:17,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:17,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:10:17,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash 104151206, now seen corresponding path program 1 times [2020-10-13 14:10:17,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:17,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773747561] [2020-10-13 14:10:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:17,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:22,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:10:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:10:22,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:10:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:10:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:10:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:22,919 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:22,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:22,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:10:22,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:22,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773747561] [2020-10-13 14:10:22,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:22,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:10:22,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220055416] [2020-10-13 14:10:22,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:10:22,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:22,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:10:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:10:22,946 INFO L87 Difference]: Start difference. First operand 636 states and 887 transitions. Second operand 9 states. [2020-10-13 14:10:23,124 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:10:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:24,216 INFO L93 Difference]: Finished difference Result 1344 states and 1928 transitions. [2020-10-13 14:10:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:10:24,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-13 14:10:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:24,224 INFO L225 Difference]: With dead ends: 1344 [2020-10-13 14:10:24,224 INFO L226 Difference]: Without dead ends: 1091 [2020-10-13 14:10:24,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:10:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-10-13 14:10:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 640. [2020-10-13 14:10:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-13 14:10:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 891 transitions. [2020-10-13 14:10:24,282 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 891 transitions. Word has length 53 [2020-10-13 14:10:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:24,283 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 891 transitions. [2020-10-13 14:10:24,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:10:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 891 transitions. [2020-10-13 14:10:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:24,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:24,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:24,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:10:24,285 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1416915955, now seen corresponding path program 1 times [2020-10-13 14:10:24,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:24,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378510275] [2020-10-13 14:10:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:29,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:29,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:29,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:10:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:10:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:10:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:10:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:10:29,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:29,619 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:29,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:29,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:29,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:10:29,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:29,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378510275] [2020-10-13 14:10:29,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:29,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:10:29,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601966910] [2020-10-13 14:10:29,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:10:29,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:29,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:10:29,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:10:29,658 INFO L87 Difference]: Start difference. First operand 640 states and 891 transitions. Second operand 10 states. [2020-10-13 14:10:29,938 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 14:10:31,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:31,086 INFO L93 Difference]: Finished difference Result 1598 states and 2299 transitions. [2020-10-13 14:10:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:10:31,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-13 14:10:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:31,095 INFO L225 Difference]: With dead ends: 1598 [2020-10-13 14:10:31,096 INFO L226 Difference]: Without dead ends: 1347 [2020-10-13 14:10:31,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:10:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-13 14:10:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 643. [2020-10-13 14:10:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-13 14:10:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 894 transitions. [2020-10-13 14:10:31,149 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 894 transitions. Word has length 53 [2020-10-13 14:10:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:31,149 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 894 transitions. [2020-10-13 14:10:31,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:10:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 894 transitions. [2020-10-13 14:10:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:31,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:31,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:31,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:10:31,151 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:31,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:31,152 INFO L82 PathProgramCache]: Analyzing trace with hash -859483155, now seen corresponding path program 1 times [2020-10-13 14:10:31,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:31,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113321663] [2020-10-13 14:10:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:36,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:36,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:36,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:10:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:10:36,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:10:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:10:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:36,387 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:36,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:10:36,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:10:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:10:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:36,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113321663] [2020-10-13 14:10:36,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:36,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:10:36,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289655442] [2020-10-13 14:10:36,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:36,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:36,440 INFO L87 Difference]: Start difference. First operand 643 states and 894 transitions. Second operand 6 states. [2020-10-13 14:10:36,604 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:10:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:37,279 INFO L93 Difference]: Finished difference Result 887 states and 1219 transitions. [2020-10-13 14:10:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:10:37,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-13 14:10:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:37,283 INFO L225 Difference]: With dead ends: 887 [2020-10-13 14:10:37,283 INFO L226 Difference]: Without dead ends: 511 [2020-10-13 14:10:37,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:10:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-13 14:10:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 493. [2020-10-13 14:10:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-13 14:10:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 676 transitions. [2020-10-13 14:10:37,324 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 676 transitions. Word has length 53 [2020-10-13 14:10:37,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:37,325 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 676 transitions. [2020-10-13 14:10:37,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 676 transitions. [2020-10-13 14:10:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:37,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:37,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:37,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:10:37,327 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:37,328 INFO L82 PathProgramCache]: Analyzing trace with hash -192666720, now seen corresponding path program 1 times [2020-10-13 14:10:37,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:37,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263742463] [2020-10-13 14:10:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:42,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:10:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:10:42,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:10:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:10:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:42,530 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:42,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:42,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:42,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:10:42,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:42,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263742463] [2020-10-13 14:10:42,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:42,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:10:42,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235824944] [2020-10-13 14:10:42,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:42,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:42,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:42,553 INFO L87 Difference]: Start difference. First operand 493 states and 676 transitions. Second operand 6 states. [2020-10-13 14:10:42,720 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:10:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:43,574 INFO L93 Difference]: Finished difference Result 1169 states and 1622 transitions. [2020-10-13 14:10:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:10:43,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-13 14:10:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:43,585 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 14:10:43,585 INFO L226 Difference]: Without dead ends: 1003 [2020-10-13 14:10:43,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:10:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2020-10-13 14:10:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 829. [2020-10-13 14:10:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-13 14:10:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1170 transitions. [2020-10-13 14:10:43,659 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1170 transitions. Word has length 53 [2020-10-13 14:10:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:43,660 INFO L479 AbstractCegarLoop]: Abstraction has 829 states and 1170 transitions. [2020-10-13 14:10:43,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1170 transitions. [2020-10-13 14:10:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:43,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:43,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:43,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:10:43,662 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1713733881, now seen corresponding path program 1 times [2020-10-13 14:10:43,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:43,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224973764] [2020-10-13 14:10:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:48,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:10:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:10:48,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:10:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:10:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:10:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:48,922 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:48,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224973764] [2020-10-13 14:10:48,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:48,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:10:48,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467052284] [2020-10-13 14:10:48,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:10:48,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:48,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:10:48,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:10:48,945 INFO L87 Difference]: Start difference. First operand 829 states and 1170 transitions. Second operand 9 states. [2020-10-13 14:10:49,118 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 14:10:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:50,956 INFO L93 Difference]: Finished difference Result 3459 states and 5052 transitions. [2020-10-13 14:10:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:10:50,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-13 14:10:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:50,967 INFO L225 Difference]: With dead ends: 3459 [2020-10-13 14:10:50,968 INFO L226 Difference]: Without dead ends: 2902 [2020-10-13 14:10:50,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:10:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-10-13 14:10:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 825. [2020-10-13 14:10:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-10-13 14:10:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1161 transitions. [2020-10-13 14:10:51,072 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1161 transitions. Word has length 53 [2020-10-13 14:10:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:51,072 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1161 transitions. [2020-10-13 14:10:51,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:10:51,072 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1161 transitions. [2020-10-13 14:10:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:51,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:51,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:51,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:10:51,074 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1156301081, now seen corresponding path program 1 times [2020-10-13 14:10:51,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:51,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449371157] [2020-10-13 14:10:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:56,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:10:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:10:56,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:10:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:10:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:56,305 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:10:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:56,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:56,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:10:56,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:10:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:10:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:56,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449371157] [2020-10-13 14:10:56,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:56,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:10:56,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803280586] [2020-10-13 14:10:56,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:56,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:56,348 INFO L87 Difference]: Start difference. First operand 825 states and 1161 transitions. Second operand 6 states. [2020-10-13 14:10:56,533 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:10:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:57,142 INFO L93 Difference]: Finished difference Result 881 states and 1207 transitions. [2020-10-13 14:10:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:10:57,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-13 14:10:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:57,145 INFO L225 Difference]: With dead ends: 881 [2020-10-13 14:10:57,145 INFO L226 Difference]: Without dead ends: 353 [2020-10-13 14:10:57,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:10:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-13 14:10:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 329. [2020-10-13 14:10:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-13 14:10:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 433 transitions. [2020-10-13 14:10:57,174 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 433 transitions. Word has length 53 [2020-10-13 14:10:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:57,175 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 433 transitions. [2020-10-13 14:10:57,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 433 transitions. [2020-10-13 14:10:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:57,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:57,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:57,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:10:57,176 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:57,177 INFO L82 PathProgramCache]: Analyzing trace with hash 965929767, now seen corresponding path program 1 times [2020-10-13 14:10:57,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:57,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965960247] [2020-10-13 14:10:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:11:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:02,376 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:02,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:11:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:11:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:11:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:02,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965960247] [2020-10-13 14:11:02,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:02,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:11:02,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363531591] [2020-10-13 14:11:02,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:11:02,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:02,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:11:02,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:11:02,403 INFO L87 Difference]: Start difference. First operand 329 states and 433 transitions. Second operand 6 states. [2020-10-13 14:11:02,589 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:11:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:03,179 INFO L93 Difference]: Finished difference Result 816 states and 1109 transitions. [2020-10-13 14:11:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:11:03,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-13 14:11:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:03,182 INFO L225 Difference]: With dead ends: 816 [2020-10-13 14:11:03,182 INFO L226 Difference]: Without dead ends: 529 [2020-10-13 14:11:03,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:11:03,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-13 14:11:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 505. [2020-10-13 14:11:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-13 14:11:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 692 transitions. [2020-10-13 14:11:03,231 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 692 transitions. Word has length 53 [2020-10-13 14:11:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:03,231 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 692 transitions. [2020-10-13 14:11:03,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:11:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 692 transitions. [2020-10-13 14:11:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:11:03,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:03,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:03,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:11:03,233 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash -48996249, now seen corresponding path program 1 times [2020-10-13 14:11:03,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:03,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101961231] [2020-10-13 14:11:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:08,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:11:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:11:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:11:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:11:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:08,518 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:08,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:08,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:08,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:08,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:08,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101961231] [2020-10-13 14:11:08,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:08,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:08,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039038483] [2020-10-13 14:11:08,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:08,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:08,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:08,538 INFO L87 Difference]: Start difference. First operand 505 states and 692 transitions. Second operand 10 states. [2020-10-13 14:11:08,769 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:11:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:09,630 INFO L93 Difference]: Finished difference Result 751 states and 1030 transitions. [2020-10-13 14:11:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:09,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-13 14:11:09,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:09,635 INFO L225 Difference]: With dead ends: 751 [2020-10-13 14:11:09,635 INFO L226 Difference]: Without dead ends: 747 [2020-10-13 14:11:09,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-13 14:11:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 514. [2020-10-13 14:11:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:11:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 706 transitions. [2020-10-13 14:11:09,686 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 706 transitions. Word has length 54 [2020-10-13 14:11:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:09,686 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 706 transitions. [2020-10-13 14:11:09,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 706 transitions. [2020-10-13 14:11:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:11:09,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:09,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:09,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:11:09,687 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:09,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1570063410, now seen corresponding path program 1 times [2020-10-13 14:11:09,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:09,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726841451] [2020-10-13 14:11:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:11:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:14,954 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:14,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:14,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:14,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:14,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:14,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:14,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:14,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726841451] [2020-10-13 14:11:14,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:14,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:14,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071613527] [2020-10-13 14:11:14,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:14,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:14,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:14,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:14,975 INFO L87 Difference]: Start difference. First operand 514 states and 706 transitions. Second operand 10 states. [2020-10-13 14:11:15,151 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:11:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:15,931 INFO L93 Difference]: Finished difference Result 1036 states and 1471 transitions. [2020-10-13 14:11:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:15,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-13 14:11:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:15,935 INFO L225 Difference]: With dead ends: 1036 [2020-10-13 14:11:15,935 INFO L226 Difference]: Without dead ends: 724 [2020-10-13 14:11:15,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-13 14:11:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 502. [2020-10-13 14:11:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-13 14:11:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 689 transitions. [2020-10-13 14:11:15,989 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 689 transitions. Word has length 54 [2020-10-13 14:11:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:15,990 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 689 transitions. [2020-10-13 14:11:15,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 689 transitions. [2020-10-13 14:11:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:11:15,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:15,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:15,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:11:15,991 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1012630610, now seen corresponding path program 1 times [2020-10-13 14:11:15,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:15,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655696314] [2020-10-13 14:11:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:18,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:21,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:11:21,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:11:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:11:21,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:11:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:21,263 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:21,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:21,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655696314] [2020-10-13 14:11:21,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:21,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:21,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062955663] [2020-10-13 14:11:21,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:21,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:21,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:21,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:21,288 INFO L87 Difference]: Start difference. First operand 502 states and 689 transitions. Second operand 11 states. [2020-10-13 14:11:21,563 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 14:11:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:23,606 INFO L93 Difference]: Finished difference Result 2575 states and 3674 transitions. [2020-10-13 14:11:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:11:23,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-13 14:11:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:23,615 INFO L225 Difference]: With dead ends: 2575 [2020-10-13 14:11:23,615 INFO L226 Difference]: Without dead ends: 2570 [2020-10-13 14:11:23,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:11:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2020-10-13 14:11:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 502. [2020-10-13 14:11:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-13 14:11:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 688 transitions. [2020-10-13 14:11:23,692 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 688 transitions. Word has length 54 [2020-10-13 14:11:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:23,692 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 688 transitions. [2020-10-13 14:11:23,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 688 transitions. [2020-10-13 14:11:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:11:23,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:23,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:23,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:11:23,693 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash -965689564, now seen corresponding path program 1 times [2020-10-13 14:11:23,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:23,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748193894] [2020-10-13 14:11:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:28,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:11:28,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:11:28,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:11:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:28,959 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:28,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:28,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:28,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748193894] [2020-10-13 14:11:28,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:28,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:28,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428034635] [2020-10-13 14:11:28,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:28,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:28,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:28,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:28,979 INFO L87 Difference]: Start difference. First operand 502 states and 688 transitions. Second operand 10 states. [2020-10-13 14:11:29,210 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:11:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:30,980 INFO L93 Difference]: Finished difference Result 1784 states and 2555 transitions. [2020-10-13 14:11:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 14:11:30,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-13 14:11:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:30,986 INFO L225 Difference]: With dead ends: 1784 [2020-10-13 14:11:30,986 INFO L226 Difference]: Without dead ends: 1778 [2020-10-13 14:11:30,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2020-10-13 14:11:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-10-13 14:11:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 514. [2020-10-13 14:11:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:11:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 704 transitions. [2020-10-13 14:11:31,050 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 704 transitions. Word has length 55 [2020-10-13 14:11:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:31,051 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 704 transitions. [2020-10-13 14:11:31,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 704 transitions. [2020-10-13 14:11:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:11:31,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:31,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:31,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:11:31,052 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:31,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:31,052 INFO L82 PathProgramCache]: Analyzing trace with hash 834448315, now seen corresponding path program 1 times [2020-10-13 14:11:31,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:31,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293729067] [2020-10-13 14:11:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:11:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:36,370 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:36,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:36,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:36,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:36,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293729067] [2020-10-13 14:11:36,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:36,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:36,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187018777] [2020-10-13 14:11:36,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:36,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:36,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:36,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:36,392 INFO L87 Difference]: Start difference. First operand 514 states and 704 transitions. Second operand 11 states. [2020-10-13 14:11:36,933 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 170 [2020-10-13 14:11:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:38,116 INFO L93 Difference]: Finished difference Result 811 states and 1127 transitions. [2020-10-13 14:11:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:11:38,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-13 14:11:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:38,120 INFO L225 Difference]: With dead ends: 811 [2020-10-13 14:11:38,120 INFO L226 Difference]: Without dead ends: 804 [2020-10-13 14:11:38,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:11:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-13 14:11:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 514. [2020-10-13 14:11:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:11:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 702 transitions. [2020-10-13 14:11:38,184 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 702 transitions. Word has length 55 [2020-10-13 14:11:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:38,185 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 702 transitions. [2020-10-13 14:11:38,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 702 transitions. [2020-10-13 14:11:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:11:38,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:38,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:38,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:11:38,186 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1813510333, now seen corresponding path program 1 times [2020-10-13 14:11:38,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:38,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218430732] [2020-10-13 14:11:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:11:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:43,481 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:43,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:43,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218430732] [2020-10-13 14:11:43,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:43,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:43,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18565817] [2020-10-13 14:11:43,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:43,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:43,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:43,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:43,503 INFO L87 Difference]: Start difference. First operand 514 states and 702 transitions. Second operand 10 states. [2020-10-13 14:11:44,050 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 170 [2020-10-13 14:11:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:45,537 INFO L93 Difference]: Finished difference Result 1411 states and 2000 transitions. [2020-10-13 14:11:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:11:45,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-13 14:11:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:45,544 INFO L225 Difference]: With dead ends: 1411 [2020-10-13 14:11:45,544 INFO L226 Difference]: Without dead ends: 1398 [2020-10-13 14:11:45,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:11:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-10-13 14:11:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 514. [2020-10-13 14:11:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:11:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 701 transitions. [2020-10-13 14:11:45,604 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 701 transitions. Word has length 55 [2020-10-13 14:11:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:45,604 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 701 transitions. [2020-10-13 14:11:45,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 701 transitions. [2020-10-13 14:11:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:11:45,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:45,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:45,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:11:45,606 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:45,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2118991285, now seen corresponding path program 1 times [2020-10-13 14:11:45,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:45,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906256785] [2020-10-13 14:11:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:11:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:50,881 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:50,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:50,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:50,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906256785] [2020-10-13 14:11:50,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:50,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:50,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414485006] [2020-10-13 14:11:50,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:50,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:50,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:50,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:50,904 INFO L87 Difference]: Start difference. First operand 514 states and 701 transitions. Second operand 10 states. [2020-10-13 14:11:51,077 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:11:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:52,007 INFO L93 Difference]: Finished difference Result 1036 states and 1466 transitions. [2020-10-13 14:11:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:52,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-13 14:11:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:52,011 INFO L225 Difference]: With dead ends: 1036 [2020-10-13 14:11:52,011 INFO L226 Difference]: Without dead ends: 729 [2020-10-13 14:11:52,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-13 14:11:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 513. [2020-10-13 14:11:52,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-13 14:11:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 699 transitions. [2020-10-13 14:11:52,083 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 699 transitions. Word has length 56 [2020-10-13 14:11:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:52,083 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 699 transitions. [2020-10-13 14:11:52,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 699 transitions. [2020-10-13 14:11:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:11:52,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:52,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:52,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:11:52,084 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1731503219, now seen corresponding path program 1 times [2020-10-13 14:11:52,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:52,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154508989] [2020-10-13 14:11:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:11:54,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:11:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-10-13 14:11:54,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:11:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:11:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,461 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:54,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:54,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154508989] [2020-10-13 14:11:54,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:54,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:54,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799507983] [2020-10-13 14:11:54,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:54,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:54,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:54,487 INFO L87 Difference]: Start difference. First operand 513 states and 699 transitions. Second operand 11 states. [2020-10-13 14:11:54,675 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:11:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:55,486 INFO L93 Difference]: Finished difference Result 729 states and 1003 transitions. [2020-10-13 14:11:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:11:55,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-13 14:11:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:55,489 INFO L225 Difference]: With dead ends: 729 [2020-10-13 14:11:55,489 INFO L226 Difference]: Without dead ends: 723 [2020-10-13 14:11:55,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:55,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-13 14:11:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 513. [2020-10-13 14:11:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-13 14:11:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 698 transitions. [2020-10-13 14:11:55,547 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 698 transitions. Word has length 56 [2020-10-13 14:11:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:55,547 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 698 transitions. [2020-10-13 14:11:55,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 698 transitions. [2020-10-13 14:11:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:11:55,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:55,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:55,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:11:55,549 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:55,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1471174230, now seen corresponding path program 1 times [2020-10-13 14:11:55,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:55,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280003239] [2020-10-13 14:11:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:55,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:11:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:11:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-13 14:11:58,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:11:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:58,371 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:58,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280003239] [2020-10-13 14:11:58,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:58,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:58,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869309166] [2020-10-13 14:11:58,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:58,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:58,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:58,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:58,392 INFO L87 Difference]: Start difference. First operand 513 states and 698 transitions. Second operand 11 states. [2020-10-13 14:11:58,568 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:12:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:00,018 INFO L93 Difference]: Finished difference Result 1167 states and 1619 transitions. [2020-10-13 14:12:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:12:00,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-13 14:12:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:00,022 INFO L225 Difference]: With dead ends: 1167 [2020-10-13 14:12:00,022 INFO L226 Difference]: Without dead ends: 1163 [2020-10-13 14:12:00,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:12:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-10-13 14:12:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 505. [2020-10-13 14:12:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-13 14:12:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 689 transitions. [2020-10-13 14:12:00,084 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 689 transitions. Word has length 56 [2020-10-13 14:12:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:00,084 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 689 transitions. [2020-10-13 14:12:00,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 689 transitions. [2020-10-13 14:12:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:12:00,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:00,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:00,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:12:00,086 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:00,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:00,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1382227501, now seen corresponding path program 1 times [2020-10-13 14:12:00,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:00,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949375349] [2020-10-13 14:12:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:12:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-13 14:12:01,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:12:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:12:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:01,756 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:01,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:01,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:01,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949375349] [2020-10-13 14:12:01,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:01,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:01,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801212630] [2020-10-13 14:12:01,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:01,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:01,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:01,777 INFO L87 Difference]: Start difference. First operand 505 states and 689 transitions. Second operand 11 states. [2020-10-13 14:12:02,003 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 14:12:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:02,799 INFO L93 Difference]: Finished difference Result 739 states and 1011 transitions. [2020-10-13 14:12:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:02,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 14:12:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:02,802 INFO L225 Difference]: With dead ends: 739 [2020-10-13 14:12:02,802 INFO L226 Difference]: Without dead ends: 731 [2020-10-13 14:12:02,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:12:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-10-13 14:12:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 508. [2020-10-13 14:12:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-13 14:12:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 692 transitions. [2020-10-13 14:12:02,856 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 692 transitions. Word has length 57 [2020-10-13 14:12:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:02,856 INFO L479 AbstractCegarLoop]: Abstraction has 508 states and 692 transitions. [2020-10-13 14:12:02,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 692 transitions. [2020-10-13 14:12:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:12:02,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:02,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:02,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:12:02,858 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:02,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:02,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1102449019, now seen corresponding path program 1 times [2020-10-13 14:12:02,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:02,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146789055] [2020-10-13 14:12:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3019 [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:12:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:12:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:06,180 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:06,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:12:06,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:06,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146789055] [2020-10-13 14:12:06,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:06,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:12:06,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399113301] [2020-10-13 14:12:06,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:12:06,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:12:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:12:06,221 INFO L87 Difference]: Start difference. First operand 508 states and 692 transitions. Second operand 10 states. [2020-10-13 14:12:06,405 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:12:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:07,090 INFO L93 Difference]: Finished difference Result 680 states and 938 transitions. [2020-10-13 14:12:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:07,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 14:12:07,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:07,096 INFO L225 Difference]: With dead ends: 680 [2020-10-13 14:12:07,096 INFO L226 Difference]: Without dead ends: 670 [2020-10-13 14:12:07,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:12:07,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-13 14:12:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 498. [2020-10-13 14:12:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-13 14:12:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 682 transitions. [2020-10-13 14:12:07,153 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 682 transitions. Word has length 57 [2020-10-13 14:12:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:07,153 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 682 transitions. [2020-10-13 14:12:07,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:12:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 682 transitions. [2020-10-13 14:12:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:12:07,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:07,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:07,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:12:07,154 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash -241840063, now seen corresponding path program 1 times [2020-10-13 14:12:07,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:07,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481408148] [2020-10-13 14:12:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:12:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2375 [2020-10-13 14:12:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:12:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:12:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:12:09,807 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:09,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:09,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481408148] [2020-10-13 14:12:09,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:09,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:12:09,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658181421] [2020-10-13 14:12:09,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:12:09,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:09,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:12:09,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:12:09,839 INFO L87 Difference]: Start difference. First operand 498 states and 682 transitions. Second operand 8 states. [2020-10-13 14:12:10,055 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:12:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:10,783 INFO L93 Difference]: Finished difference Result 660 states and 918 transitions. [2020-10-13 14:12:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:12:10,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-13 14:12:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:10,786 INFO L225 Difference]: With dead ends: 660 [2020-10-13 14:12:10,787 INFO L226 Difference]: Without dead ends: 642 [2020-10-13 14:12:10,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:12:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-13 14:12:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 480. [2020-10-13 14:12:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-13 14:12:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 661 transitions. [2020-10-13 14:12:10,848 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 661 transitions. Word has length 57 [2020-10-13 14:12:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:10,848 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 661 transitions. [2020-10-13 14:12:10,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:12:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 661 transitions. [2020-10-13 14:12:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:12:10,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:10,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:10,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:12:10,849 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:10,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2103534015, now seen corresponding path program 1 times [2020-10-13 14:12:10,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:10,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541824236] [2020-10-13 14:12:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:12:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-10-13 14:12:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:12:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:12:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:12,739 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:12,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:12:12,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:12,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541824236] [2020-10-13 14:12:12,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:12,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:12,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133450056] [2020-10-13 14:12:12,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:12,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:12,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:12,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:12,776 INFO L87 Difference]: Start difference. First operand 480 states and 661 transitions. Second operand 11 states. [2020-10-13 14:12:13,174 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 160 [2020-10-13 14:12:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:14,341 INFO L93 Difference]: Finished difference Result 1473 states and 2119 transitions. [2020-10-13 14:12:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:12:14,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 14:12:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:14,345 INFO L225 Difference]: With dead ends: 1473 [2020-10-13 14:12:14,345 INFO L226 Difference]: Without dead ends: 1142 [2020-10-13 14:12:14,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:12:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2020-10-13 14:12:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 480. [2020-10-13 14:12:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-13 14:12:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 660 transitions. [2020-10-13 14:12:14,413 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 660 transitions. Word has length 57 [2020-10-13 14:12:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:14,413 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 660 transitions. [2020-10-13 14:12:14,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 660 transitions. [2020-10-13 14:12:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:12:14,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:14,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:14,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:12:14,414 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash 482949735, now seen corresponding path program 1 times [2020-10-13 14:12:14,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:14,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067750039] [2020-10-13 14:12:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1732 [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:12:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:16,357 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:16,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067750039] [2020-10-13 14:12:16,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:16,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:16,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104400978] [2020-10-13 14:12:16,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:16,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:16,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:16,378 INFO L87 Difference]: Start difference. First operand 480 states and 660 transitions. Second operand 7 states. [2020-10-13 14:12:16,578 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:12:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:17,186 INFO L93 Difference]: Finished difference Result 985 states and 1393 transitions. [2020-10-13 14:12:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:12:17,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-13 14:12:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:17,188 INFO L225 Difference]: With dead ends: 985 [2020-10-13 14:12:17,188 INFO L226 Difference]: Without dead ends: 622 [2020-10-13 14:12:17,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-10-13 14:12:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 460. [2020-10-13 14:12:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-13 14:12:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 632 transitions. [2020-10-13 14:12:17,262 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 632 transitions. Word has length 58 [2020-10-13 14:12:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:17,262 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 632 transitions. [2020-10-13 14:12:17,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 632 transitions. [2020-10-13 14:12:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:12:17,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:17,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:17,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:12:17,263 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:17,264 INFO L82 PathProgramCache]: Analyzing trace with hash 389251096, now seen corresponding path program 1 times [2020-10-13 14:12:17,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:17,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902321128] [2020-10-13 14:12:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:19,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:12:19,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:12:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2301 [2020-10-13 14:12:19,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:12:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:12:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:19,787 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:19,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:19,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:12:19,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:19,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902321128] [2020-10-13 14:12:19,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:19,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:12:19,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516895051] [2020-10-13 14:12:19,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:12:19,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:12:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:12:19,811 INFO L87 Difference]: Start difference. First operand 460 states and 632 transitions. Second operand 8 states. [2020-10-13 14:12:20,018 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 14:12:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:20,912 INFO L93 Difference]: Finished difference Result 963 states and 1366 transitions. [2020-10-13 14:12:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:20,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-13 14:12:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:20,915 INFO L225 Difference]: With dead ends: 963 [2020-10-13 14:12:20,915 INFO L226 Difference]: Without dead ends: 632 [2020-10-13 14:12:20,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-10-13 14:12:20,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 460. [2020-10-13 14:12:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-13 14:12:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 631 transitions. [2020-10-13 14:12:20,981 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 631 transitions. Word has length 58 [2020-10-13 14:12:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:20,981 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 631 transitions. [2020-10-13 14:12:20,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:12:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 631 transitions. [2020-10-13 14:12:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:12:20,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:20,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:20,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:12:20,982 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:20,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2079086952, now seen corresponding path program 1 times [2020-10-13 14:12:20,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:20,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729635654] [2020-10-13 14:12:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:21,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:12:21,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:12:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-13 14:12:21,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:12:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:12:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:12:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:22,199 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:22,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:22,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:22,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:22,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729635654] [2020-10-13 14:12:22,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:22,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:12:22,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724908901] [2020-10-13 14:12:22,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:12:22,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:22,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:12:22,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:12:22,220 INFO L87 Difference]: Start difference. First operand 460 states and 631 transitions. Second operand 12 states. [2020-10-13 14:12:22,413 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:12:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:23,898 INFO L93 Difference]: Finished difference Result 1244 states and 1787 transitions. [2020-10-13 14:12:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:12:23,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-13 14:12:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:23,902 INFO L225 Difference]: With dead ends: 1244 [2020-10-13 14:12:23,902 INFO L226 Difference]: Without dead ends: 1238 [2020-10-13 14:12:23,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:12:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-10-13 14:12:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 460. [2020-10-13 14:12:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-13 14:12:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 629 transitions. [2020-10-13 14:12:23,971 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 629 transitions. Word has length 59 [2020-10-13 14:12:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:23,971 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 629 transitions. [2020-10-13 14:12:23,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:12:23,972 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 629 transitions. [2020-10-13 14:12:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:12:23,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:23,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:23,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:12:23,972 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:23,973 INFO L82 PathProgramCache]: Analyzing trace with hash 365915568, now seen corresponding path program 1 times [2020-10-13 14:12:23,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:23,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008230709] [2020-10-13 14:12:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:12:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:12:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-13 14:12:24,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:12:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:12:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:25,102 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:25,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:25,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:25,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:25,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:25,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008230709] [2020-10-13 14:12:25,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:25,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:25,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675997174] [2020-10-13 14:12:25,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:25,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:25,125 INFO L87 Difference]: Start difference. First operand 460 states and 629 transitions. Second operand 11 states. [2020-10-13 14:12:25,319 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:12:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:26,394 INFO L93 Difference]: Finished difference Result 632 states and 875 transitions. [2020-10-13 14:12:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:26,395 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-13 14:12:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:26,396 INFO L225 Difference]: With dead ends: 632 [2020-10-13 14:12:26,396 INFO L226 Difference]: Without dead ends: 620 [2020-10-13 14:12:26,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-13 14:12:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-13 14:12:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 460. [2020-10-13 14:12:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-13 14:12:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 628 transitions. [2020-10-13 14:12:26,465 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 628 transitions. Word has length 59 [2020-10-13 14:12:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:26,465 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 628 transitions. [2020-10-13 14:12:26,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 628 transitions. [2020-10-13 14:12:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:12:26,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:26,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:26,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:12:26,466 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash -659343929, now seen corresponding path program 1 times [2020-10-13 14:12:26,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:26,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854568246] [2020-10-13 14:12:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:26,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:12:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 14:12:26,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:12:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:26,842 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:26,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854568246] [2020-10-13 14:12:26,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:26,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:26,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771447253] [2020-10-13 14:12:26,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:26,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:26,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:26,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:26,863 INFO L87 Difference]: Start difference. First operand 460 states and 628 transitions. Second operand 9 states. [2020-10-13 14:12:27,048 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:12:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:27,881 INFO L93 Difference]: Finished difference Result 620 states and 862 transitions. [2020-10-13 14:12:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:27,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-13 14:12:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:27,883 INFO L225 Difference]: With dead ends: 620 [2020-10-13 14:12:27,883 INFO L226 Difference]: Without dead ends: 608 [2020-10-13 14:12:27,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-13 14:12:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 448. [2020-10-13 14:12:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 14:12:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 615 transitions. [2020-10-13 14:12:27,959 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 615 transitions. Word has length 60 [2020-10-13 14:12:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:27,960 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 615 transitions. [2020-10-13 14:12:27,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 615 transitions. [2020-10-13 14:12:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:12:27,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:27,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:27,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:12:27,961 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1227846406, now seen corresponding path program 1 times [2020-10-13 14:12:27,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:27,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547087018] [2020-10-13 14:12:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:12:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 14:12:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:12:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:28,371 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:28,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:28,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547087018] [2020-10-13 14:12:28,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:28,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:28,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732941568] [2020-10-13 14:12:28,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:28,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:28,393 INFO L87 Difference]: Start difference. First operand 448 states and 615 transitions. Second operand 9 states. [2020-10-13 14:12:28,584 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:12:29,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:29,346 INFO L93 Difference]: Finished difference Result 602 states and 844 transitions. [2020-10-13 14:12:29,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:29,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-13 14:12:29,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:29,348 INFO L225 Difference]: With dead ends: 602 [2020-10-13 14:12:29,348 INFO L226 Difference]: Without dead ends: 596 [2020-10-13 14:12:29,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:12:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-13 14:12:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 442. [2020-10-13 14:12:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-13 14:12:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 608 transitions. [2020-10-13 14:12:29,431 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 608 transitions. Word has length 60 [2020-10-13 14:12:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:29,431 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 608 transitions. [2020-10-13 14:12:29,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 608 transitions. [2020-10-13 14:12:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 14:12:29,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:29,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:29,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 14:12:29,432 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 295861071, now seen corresponding path program 1 times [2020-10-13 14:12:29,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:29,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506966569] [2020-10-13 14:12:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:29,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:34,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:34,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 14:12:34,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:12:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:12:34,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 14:12:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:12:34,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:34,632 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:34,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:12:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:34,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506966569] [2020-10-13 14:12:34,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:34,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:34,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255389042] [2020-10-13 14:12:34,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:34,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:34,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:34,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:34,661 INFO L87 Difference]: Start difference. First operand 442 states and 608 transitions. Second operand 4 states. [2020-10-13 14:12:34,840 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 14:12:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:35,389 INFO L93 Difference]: Finished difference Result 1022 states and 1474 transitions. [2020-10-13 14:12:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:35,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-13 14:12:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:35,391 INFO L225 Difference]: With dead ends: 1022 [2020-10-13 14:12:35,391 INFO L226 Difference]: Without dead ends: 716 [2020-10-13 14:12:35,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-13 14:12:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 690. [2020-10-13 14:12:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-13 14:12:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 976 transitions. [2020-10-13 14:12:35,531 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 976 transitions. Word has length 77 [2020-10-13 14:12:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:35,531 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 976 transitions. [2020-10-13 14:12:35,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 976 transitions. [2020-10-13 14:12:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 14:12:35,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:35,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:35,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 14:12:35,533 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash -723941868, now seen corresponding path program 1 times [2020-10-13 14:12:35,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:35,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363270957] [2020-10-13 14:12:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 14:12:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:12:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:12:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 14:12:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:12:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:40,733 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:40,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363270957] [2020-10-13 14:12:40,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:40,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:40,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951646758] [2020-10-13 14:12:40,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:40,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:40,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:40,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:40,755 INFO L87 Difference]: Start difference. First operand 690 states and 976 transitions. Second operand 4 states. [2020-10-13 14:12:40,930 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 14:12:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:41,625 INFO L93 Difference]: Finished difference Result 1734 states and 2522 transitions. [2020-10-13 14:12:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:41,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-13 14:12:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:41,628 INFO L225 Difference]: With dead ends: 1734 [2020-10-13 14:12:41,628 INFO L226 Difference]: Without dead ends: 1180 [2020-10-13 14:12:41,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-13 14:12:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1130. [2020-10-13 14:12:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-13 14:12:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1620 transitions. [2020-10-13 14:12:41,897 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1620 transitions. Word has length 78 [2020-10-13 14:12:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:41,897 INFO L479 AbstractCegarLoop]: Abstraction has 1130 states and 1620 transitions. [2020-10-13 14:12:41,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1620 transitions. [2020-10-13 14:12:41,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:12:41,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:41,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:41,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 14:12:41,899 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2134953595, now seen corresponding path program 1 times [2020-10-13 14:12:41,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:41,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264383722] [2020-10-13 14:12:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:41,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:46,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:12:46,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:12:46,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:12:46,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 14:12:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:12:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:47,091 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:12:47,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:47,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264383722] [2020-10-13 14:12:47,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:47,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:47,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712432706] [2020-10-13 14:12:47,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:47,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:47,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:47,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:47,111 INFO L87 Difference]: Start difference. First operand 1130 states and 1620 transitions. Second operand 4 states. [2020-10-13 14:12:47,278 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:12:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:48,046 INFO L93 Difference]: Finished difference Result 3118 states and 4566 transitions. [2020-10-13 14:12:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:48,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-13 14:12:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:48,056 INFO L225 Difference]: With dead ends: 3118 [2020-10-13 14:12:48,056 INFO L226 Difference]: Without dead ends: 2124 [2020-10-13 14:12:48,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2020-10-13 14:12:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2122. [2020-10-13 14:12:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2020-10-13 14:12:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3028 transitions. [2020-10-13 14:12:48,707 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3028 transitions. Word has length 79 [2020-10-13 14:12:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:48,707 INFO L479 AbstractCegarLoop]: Abstraction has 2122 states and 3028 transitions. [2020-10-13 14:12:48,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3028 transitions. [2020-10-13 14:12:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:12:48,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:48,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:48,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 14:12:48,710 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:48,710 INFO L82 PathProgramCache]: Analyzing trace with hash 870230855, now seen corresponding path program 1 times [2020-10-13 14:12:48,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:48,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308049341] [2020-10-13 14:12:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:53,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:53,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:12:53,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:12:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:12:53,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:12:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:12:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:53,895 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:12:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:53,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:53,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:53,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:53,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:53,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308049341] [2020-10-13 14:12:53,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:53,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:53,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663014352] [2020-10-13 14:12:53,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:53,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:53,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:53,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:53,917 INFO L87 Difference]: Start difference. First operand 2122 states and 3028 transitions. Second operand 4 states. [2020-10-13 14:12:54,095 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 14:12:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:55,364 INFO L93 Difference]: Finished difference Result 5838 states and 8342 transitions. [2020-10-13 14:12:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:55,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-13 14:12:55,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:55,373 INFO L225 Difference]: With dead ends: 5838 [2020-10-13 14:12:55,373 INFO L226 Difference]: Without dead ends: 3852 [2020-10-13 14:12:55,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2020-10-13 14:12:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3658. [2020-10-13 14:12:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3658 states. [2020-10-13 14:12:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5172 transitions. [2020-10-13 14:12:56,335 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5172 transitions. Word has length 81 [2020-10-13 14:12:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:56,336 INFO L479 AbstractCegarLoop]: Abstraction has 3658 states and 5172 transitions. [2020-10-13 14:12:56,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5172 transitions. [2020-10-13 14:12:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:12:56,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:56,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:56,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 14:12:56,338 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:56,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1441612655, now seen corresponding path program 1 times [2020-10-13 14:12:56,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:56,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781355204] [2020-10-13 14:12:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:13:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:13:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:13:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:13:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 14:13:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:13:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:01,530 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:13:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:01,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781355204] [2020-10-13 14:13:01,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:01,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:01,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832136668] [2020-10-13 14:13:01,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:13:01,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:01,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:13:01,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:01,549 INFO L87 Difference]: Start difference. First operand 3658 states and 5172 transitions. Second operand 5 states. [2020-10-13 14:13:01,725 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 14:13:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:02,877 INFO L93 Difference]: Finished difference Result 7198 states and 10218 transitions. [2020-10-13 14:13:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:02,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 14:13:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:02,887 INFO L225 Difference]: With dead ends: 7198 [2020-10-13 14:13:02,887 INFO L226 Difference]: Without dead ends: 3676 [2020-10-13 14:13:02,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-10-13 14:13:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3612. [2020-10-13 14:13:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-13 14:13:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5121 transitions. [2020-10-13 14:13:03,872 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5121 transitions. Word has length 82 [2020-10-13 14:13:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:03,872 INFO L479 AbstractCegarLoop]: Abstraction has 3612 states and 5121 transitions. [2020-10-13 14:13:03,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:13:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5121 transitions. [2020-10-13 14:13:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:13:03,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:03,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:03,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 14:13:03,874 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1569697962, now seen corresponding path program 1 times [2020-10-13 14:13:03,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:03,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474969599] [2020-10-13 14:13:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:06,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:13:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:13:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2623 [2020-10-13 14:13:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 14:13:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:13:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:06,742 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:13:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:06,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:06,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:13:06,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:06,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:06,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474969599] [2020-10-13 14:13:06,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:06,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:06,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565221271] [2020-10-13 14:13:06,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:06,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:06,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:06,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:06,764 INFO L87 Difference]: Start difference. First operand 3612 states and 5121 transitions. Second operand 4 states. [2020-10-13 14:13:06,931 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:13:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:08,025 INFO L93 Difference]: Finished difference Result 7136 states and 10147 transitions. [2020-10-13 14:13:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:13:08,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-13 14:13:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:08,030 INFO L225 Difference]: With dead ends: 7136 [2020-10-13 14:13:08,030 INFO L226 Difference]: Without dead ends: 3614 [2020-10-13 14:13:08,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2020-10-13 14:13:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3612. [2020-10-13 14:13:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-13 14:13:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5057 transitions. [2020-10-13 14:13:08,827 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5057 transitions. Word has length 82 [2020-10-13 14:13:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:08,827 INFO L479 AbstractCegarLoop]: Abstraction has 3612 states and 5057 transitions. [2020-10-13 14:13:08,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5057 transitions. [2020-10-13 14:13:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:13:08,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:08,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:08,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 14:13:08,830 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:08,831 INFO L82 PathProgramCache]: Analyzing trace with hash 829957641, now seen corresponding path program 1 times [2020-10-13 14:13:08,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:08,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356267265] [2020-10-13 14:13:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:13:13,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:13:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4273 [2020-10-13 14:13:13,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 14:13:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:13,300 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:13:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:13,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:13:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:13,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356267265] [2020-10-13 14:13:13,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:13,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:13,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837921235] [2020-10-13 14:13:13,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:13,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:13,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:13,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:13,333 INFO L87 Difference]: Start difference. First operand 3612 states and 5057 transitions. Second operand 4 states. [2020-10-13 14:13:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:15,162 INFO L93 Difference]: Finished difference Result 9184 states and 12739 transitions. [2020-10-13 14:13:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:13:15,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-13 14:13:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:15,167 INFO L225 Difference]: With dead ends: 9184 [2020-10-13 14:13:15,167 INFO L226 Difference]: Without dead ends: 5662 [2020-10-13 14:13:15,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2020-10-13 14:13:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5660. [2020-10-13 14:13:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5660 states. [2020-10-13 14:13:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 7585 transitions. [2020-10-13 14:13:16,478 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 7585 transitions. Word has length 82 [2020-10-13 14:13:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:16,479 INFO L479 AbstractCegarLoop]: Abstraction has 5660 states and 7585 transitions. [2020-10-13 14:13:16,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 7585 transitions. [2020-10-13 14:13:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 14:13:16,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:16,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:16,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 14:13:16,480 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:16,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1356828958, now seen corresponding path program 1 times [2020-10-13 14:13:16,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:16,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759874683] [2020-10-13 14:13:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:19,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 14:13:19,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:13:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2677 [2020-10-13 14:13:19,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 14:13:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:13:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:19,375 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:13:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:19,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:19,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:19,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:19,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759874683] [2020-10-13 14:13:19,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:19,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:13:19,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27783065] [2020-10-13 14:13:19,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:19,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:19,395 INFO L87 Difference]: Start difference. First operand 5660 states and 7585 transitions. Second operand 6 states. [2020-10-13 14:13:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:22,137 INFO L93 Difference]: Finished difference Result 9122 states and 12190 transitions. [2020-10-13 14:13:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:13:22,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-13 14:13:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:22,146 INFO L225 Difference]: With dead ends: 9122 [2020-10-13 14:13:22,146 INFO L226 Difference]: Without dead ends: 9120 [2020-10-13 14:13:22,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:13:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-10-13 14:13:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 5852. [2020-10-13 14:13:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5852 states. [2020-10-13 14:13:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7713 transitions. [2020-10-13 14:13:23,674 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7713 transitions. Word has length 83 [2020-10-13 14:13:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:23,675 INFO L479 AbstractCegarLoop]: Abstraction has 5852 states and 7713 transitions. [2020-10-13 14:13:23,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7713 transitions. [2020-10-13 14:13:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 14:13:23,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:23,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:23,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 14:13:23,676 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash 375328802, now seen corresponding path program 1 times [2020-10-13 14:13:23,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:23,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458542367] [2020-10-13 14:13:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 14:13:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:13:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3792 [2020-10-13 14:13:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 14:13:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:13:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:27,649 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:13:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:27,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:27,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:27,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:27,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458542367] [2020-10-13 14:13:27,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:27,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:27,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135935650] [2020-10-13 14:13:27,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:27,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:27,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:27,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:27,669 INFO L87 Difference]: Start difference. First operand 5852 states and 7713 transitions. Second operand 4 states. [2020-10-13 14:13:27,840 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 14:13:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:29,985 INFO L93 Difference]: Finished difference Result 12608 states and 16643 transitions. [2020-10-13 14:13:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:13:29,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-13 14:13:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:29,993 INFO L225 Difference]: With dead ends: 12608 [2020-10-13 14:13:29,993 INFO L226 Difference]: Without dead ends: 6846 [2020-10-13 14:13:30,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2020-10-13 14:13:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 6844. [2020-10-13 14:13:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6844 states. [2020-10-13 14:13:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8897 transitions. [2020-10-13 14:13:31,751 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8897 transitions. Word has length 83 [2020-10-13 14:13:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:31,752 INFO L479 AbstractCegarLoop]: Abstraction has 6844 states and 8897 transitions. [2020-10-13 14:13:31,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8897 transitions. [2020-10-13 14:13:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:13:31,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:31,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:31,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 14:13:31,756 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1784938361, now seen corresponding path program 1 times [2020-10-13 14:13:31,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:31,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310539] [2020-10-13 14:13:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:31,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:13:36,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:13:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:13:36,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:13:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:13:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:13:36,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:37,085 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:13:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:37,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:37,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:13:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 14:13:37,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310539] [2020-10-13 14:13:37,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:37,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:13:37,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160269733] [2020-10-13 14:13:37,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:13:37,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:37,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:13:37,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:13:37,113 INFO L87 Difference]: Start difference. First operand 6844 states and 8897 transitions. Second operand 12 states. [2020-10-13 14:13:37,678 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 167