/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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:13:46,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:13:46,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:13:46,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:13:46,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:13:46,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:13:46,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:13:46,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:13:46,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:13:46,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:13:46,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:13:46,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:13:46,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:13:46,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:13:46,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:13:46,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:13:46,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:13:46,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:13:46,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:13:46,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:13:46,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:13:46,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:13:46,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:13:46,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:13:46,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:13:46,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:13:46,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:13:46,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:13:46,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:13:46,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:13:46,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:13:46,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:13:46,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:13:46,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:13:46,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:13:46,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:13:46,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:13:46,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:13:46,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:13:46,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:13:46,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:13:46,845 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 14:13:46,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:13:46,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:13:46,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:13:46,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:13:46,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:13:46,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:13:46,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:13:46,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:13:46,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:13:46,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:13:46,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:13:46,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:13:46,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:13:46,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:13:46,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:13:46,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:13:46,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:13:46,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:13:46,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:13:46,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:13:46,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:13:46,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:13:46,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:13:46,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:13:46,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:13:46,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:13:46,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:13:46,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:13:46,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:13:46,878 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 14:13:47,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:13:47,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:13:47,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:13:47,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:13:47,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:13:47,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:13:47,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/993c38639/ffda5b00e48d40fbb53a0eaa993fe2fb/FLAG4504fe5e9 [2020-10-13 14:13:47,930 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:13:47,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:13:47,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/993c38639/ffda5b00e48d40fbb53a0eaa993fe2fb/FLAG4504fe5e9 [2020-10-13 14:13:48,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/993c38639/ffda5b00e48d40fbb53a0eaa993fe2fb [2020-10-13 14:13:48,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:13:48,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:13:48,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:13:48,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:13:48,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:13:48,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:13:48" (1/1) ... [2020-10-13 14:13:48,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a89726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:48, skipping insertion in model container [2020-10-13 14:13:48,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:13:48" (1/1) ... [2020-10-13 14:13:48,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:13:48,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:13:49,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:13:49,038 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:13:49,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:13:49,416 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:13:49,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49 WrapperNode [2020-10-13 14:13:49,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:13:49,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:13:49,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:13:49,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:13:49,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (1/1) ... [2020-10-13 14:13:49,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:13:49,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:13:49,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:13:49,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:13:49,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (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 14:13:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:13:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:13:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:13:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:13:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:13:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:13:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:13:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:13:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:13:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:13:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:13:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:13:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:13:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:13:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:13:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:13:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:13:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:13:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:13:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:13:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:13:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:13:51,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:13:51,772 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:13:51,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:13:51 BoogieIcfgContainer [2020-10-13 14:13:51,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:13:51,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:13:51,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:13:51,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:13:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:13:48" (1/3) ... [2020-10-13 14:13:51,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc45d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:13:51, skipping insertion in model container [2020-10-13 14:13:51,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:49" (2/3) ... [2020-10-13 14:13:51,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc45d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:13:51, skipping insertion in model container [2020-10-13 14:13:51,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:13:51" (3/3) ... [2020-10-13 14:13:51,791 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:13:51,802 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:13:51,811 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-13 14:13:51,826 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-13 14:13:51,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:13:51,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:13:51,858 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:13:51,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:13:51,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:13:51,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:13:51,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:13:51,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:13:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2020-10-13 14:13:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:13:51,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:51,909 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] [2020-10-13 14:13:51,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1666706590, now seen corresponding path program 1 times [2020-10-13 14:13:51,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:51,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565690241] [2020-10-13 14:13:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:52,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:13:57,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:13:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:13:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:13:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:13:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:13:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 14:13:57,836 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:13:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:57,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:57,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:57,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:57,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:13:57,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:57,884 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 14:13:57,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565690241] [2020-10-13 14:13:57,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:57,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:13:57,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615679478] [2020-10-13 14:13:57,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:13:57,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:13:57,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:57,917 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 7 states. [2020-10-13 14:13:58,287 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:14:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:02,275 INFO L93 Difference]: Finished difference Result 1447 states and 2404 transitions. [2020-10-13 14:14:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:02,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:02,303 INFO L225 Difference]: With dead ends: 1447 [2020-10-13 14:14:02,304 INFO L226 Difference]: Without dead ends: 1255 [2020-10-13 14:14:02,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-10-13 14:14:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 699. [2020-10-13 14:14:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-10-13 14:14:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 925 transitions. [2020-10-13 14:14:02,429 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 925 transitions. Word has length 63 [2020-10-13 14:14:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:02,430 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 925 transitions. [2020-10-13 14:14:02,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 925 transitions. [2020-10-13 14:14:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:02,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:02,440 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] [2020-10-13 14:14:02,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:14:02,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:02,442 INFO L82 PathProgramCache]: Analyzing trace with hash 478280318, now seen corresponding path program 1 times [2020-10-13 14:14:02,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:02,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469536794] [2020-10-13 14:14:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:05,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:07,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:07,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:14:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:14:07,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:07,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:14:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 14:14:07,873 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:14:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:07,909 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 14:14:07,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469536794] [2020-10-13 14:14:07,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:07,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:07,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694073844] [2020-10-13 14:14:07,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:07,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:07,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:07,913 INFO L87 Difference]: Start difference. First operand 699 states and 925 transitions. Second operand 7 states. [2020-10-13 14:14:08,193 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:14:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:11,225 INFO L93 Difference]: Finished difference Result 2243 states and 3141 transitions. [2020-10-13 14:14:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:11,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:11,244 INFO L225 Difference]: With dead ends: 2243 [2020-10-13 14:14:11,244 INFO L226 Difference]: Without dead ends: 2014 [2020-10-13 14:14:11,255 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 14:14:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-10-13 14:14:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1147. [2020-10-13 14:14:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-10-13 14:14:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1591 transitions. [2020-10-13 14:14:11,368 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1591 transitions. Word has length 63 [2020-10-13 14:14:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:11,369 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1591 transitions. [2020-10-13 14:14:11,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1591 transitions. [2020-10-13 14:14:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:11,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:11,374 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] [2020-10-13 14:14:11,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:14:11,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:11,375 INFO L82 PathProgramCache]: Analyzing trace with hash 940154528, now seen corresponding path program 1 times [2020-10-13 14:14:11,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:11,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123586020] [2020-10-13 14:14:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:14,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:16,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:16,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:16,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:14:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:14:16,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:14:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:16,701 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:14:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:16,738 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 14:14:16,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123586020] [2020-10-13 14:14:16,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:16,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:16,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753013578] [2020-10-13 14:14:16,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:16,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:16,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:16,741 INFO L87 Difference]: Start difference. First operand 1147 states and 1591 transitions. Second operand 7 states. [2020-10-13 14:14:17,026 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:14:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:19,718 INFO L93 Difference]: Finished difference Result 4308 states and 6292 transitions. [2020-10-13 14:14:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:19,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:19,747 INFO L225 Difference]: With dead ends: 4308 [2020-10-13 14:14:19,748 INFO L226 Difference]: Without dead ends: 3784 [2020-10-13 14:14:19,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2020-10-13 14:14:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 2192. [2020-10-13 14:14:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2192 states. [2020-10-13 14:14:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 3161 transitions. [2020-10-13 14:14:19,981 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 3161 transitions. Word has length 63 [2020-10-13 14:14:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:19,983 INFO L479 AbstractCegarLoop]: Abstraction has 2192 states and 3161 transitions. [2020-10-13 14:14:19,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 3161 transitions. [2020-10-13 14:14:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:19,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:19,988 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] [2020-10-13 14:14:19,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:14:19,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:19,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1556222906, now seen corresponding path program 1 times [2020-10-13 14:14:19,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:19,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761277689] [2020-10-13 14:14:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:25,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:14:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:14:25,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:14:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:25,375 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:25,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:25,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:14:25,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:25,412 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 14:14:25,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761277689] [2020-10-13 14:14:25,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:25,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:25,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833575658] [2020-10-13 14:14:25,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:25,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:25,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:25,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:25,414 INFO L87 Difference]: Start difference. First operand 2192 states and 3161 transitions. Second operand 7 states. [2020-10-13 14:14:25,699 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:14:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:28,332 INFO L93 Difference]: Finished difference Result 5792 states and 8609 transitions. [2020-10-13 14:14:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:28,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:28,354 INFO L225 Difference]: With dead ends: 5792 [2020-10-13 14:14:28,354 INFO L226 Difference]: Without dead ends: 4312 [2020-10-13 14:14:28,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2020-10-13 14:14:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 1961. [2020-10-13 14:14:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-13 14:14:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2832 transitions. [2020-10-13 14:14:28,486 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2832 transitions. Word has length 63 [2020-10-13 14:14:28,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:28,486 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2832 transitions. [2020-10-13 14:14:28,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2832 transitions. [2020-10-13 14:14:28,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:28,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:28,489 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] [2020-10-13 14:14:28,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:14:28,489 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:28,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:28,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1929658970, now seen corresponding path program 1 times [2020-10-13 14:14:28,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:28,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670976823] [2020-10-13 14:14:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:14:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:14:33,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:14:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:33,897 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:33,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:14:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:33,998 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 14:14:33,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670976823] [2020-10-13 14:14:33,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:34,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:34,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808721886] [2020-10-13 14:14:34,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:34,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:34,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:34,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:34,005 INFO L87 Difference]: Start difference. First operand 1961 states and 2832 transitions. Second operand 7 states. [2020-10-13 14:14:34,414 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:14:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:36,639 INFO L93 Difference]: Finished difference Result 5101 states and 7562 transitions. [2020-10-13 14:14:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:36,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:36,658 INFO L225 Difference]: With dead ends: 5101 [2020-10-13 14:14:36,659 INFO L226 Difference]: Without dead ends: 4093 [2020-10-13 14:14:36,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2020-10-13 14:14:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 1805. [2020-10-13 14:14:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2020-10-13 14:14:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2607 transitions. [2020-10-13 14:14:36,782 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2607 transitions. Word has length 63 [2020-10-13 14:14:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:36,783 INFO L479 AbstractCegarLoop]: Abstraction has 1805 states and 2607 transitions. [2020-10-13 14:14:36,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2607 transitions. [2020-10-13 14:14:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:36,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:36,785 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] [2020-10-13 14:14:36,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:14:36,786 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash -882405207, now seen corresponding path program 1 times [2020-10-13 14:14:36,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:36,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771450542] [2020-10-13 14:14:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:36,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:38,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:14:41,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:14:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:42,206 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:42,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:42,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:14:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:42,237 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 14:14:42,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771450542] [2020-10-13 14:14:42,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:42,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:42,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879188696] [2020-10-13 14:14:42,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:42,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:42,241 INFO L87 Difference]: Start difference. First operand 1805 states and 2607 transitions. Second operand 7 states. [2020-10-13 14:14:42,603 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:14:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:44,935 INFO L93 Difference]: Finished difference Result 4785 states and 7099 transitions. [2020-10-13 14:14:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:44,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:44,952 INFO L225 Difference]: With dead ends: 4785 [2020-10-13 14:14:44,952 INFO L226 Difference]: Without dead ends: 3796 [2020-10-13 14:14:44,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2020-10-13 14:14:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 1673. [2020-10-13 14:14:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1673 states. [2020-10-13 14:14:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2412 transitions. [2020-10-13 14:14:45,072 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2412 transitions. Word has length 63 [2020-10-13 14:14:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:45,072 INFO L479 AbstractCegarLoop]: Abstraction has 1673 states and 2412 transitions. [2020-10-13 14:14:45,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2412 transitions. [2020-10-13 14:14:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:45,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:45,075 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] [2020-10-13 14:14:45,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:14:45,075 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:45,075 INFO L82 PathProgramCache]: Analyzing trace with hash 53953382, now seen corresponding path program 1 times [2020-10-13 14:14:45,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:45,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429245819] [2020-10-13 14:14:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:14:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:50,449 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:50,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:50,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:50,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:50,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 14:14:50,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:14:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:14:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:50,518 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 14:14:50,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429245819] [2020-10-13 14:14:50,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:50,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:14:50,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700731994] [2020-10-13 14:14:50,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:14:50,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:14:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:14:50,520 INFO L87 Difference]: Start difference. First operand 1673 states and 2412 transitions. Second operand 6 states. [2020-10-13 14:14:50,813 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-13 14:14:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:52,461 INFO L93 Difference]: Finished difference Result 2774 states and 4009 transitions. [2020-10-13 14:14:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:14:52,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:14:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:52,471 INFO L225 Difference]: With dead ends: 2774 [2020-10-13 14:14:52,472 INFO L226 Difference]: Without dead ends: 2230 [2020-10-13 14:14:52,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:14:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2020-10-13 14:14:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1492. [2020-10-13 14:14:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-10-13 14:14:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2127 transitions. [2020-10-13 14:14:52,595 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2127 transitions. Word has length 64 [2020-10-13 14:14:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:52,595 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 2127 transitions. [2020-10-13 14:14:52,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:14:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2127 transitions. [2020-10-13 14:14:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:52,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:52,600 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] [2020-10-13 14:14:52,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:14:52,600 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1937354705, now seen corresponding path program 1 times [2020-10-13 14:14:52,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:52,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435160211] [2020-10-13 14:14:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:57,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:57,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:14:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:14:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:57,894 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:14:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:14:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:14:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:14:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:57,942 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 14:14:57,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435160211] [2020-10-13 14:14:57,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:57,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:14:57,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326998541] [2020-10-13 14:14:57,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:14:57,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:57,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:14:57,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:14:57,944 INFO L87 Difference]: Start difference. First operand 1492 states and 2127 transitions. Second operand 6 states. [2020-10-13 14:14:58,225 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-13 14:14:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:59,382 INFO L93 Difference]: Finished difference Result 2335 states and 3395 transitions. [2020-10-13 14:14:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:14:59,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:14:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:59,388 INFO L225 Difference]: With dead ends: 2335 [2020-10-13 14:14:59,388 INFO L226 Difference]: Without dead ends: 1358 [2020-10-13 14:14:59,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:14:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2020-10-13 14:14:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 863. [2020-10-13 14:14:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-13 14:14:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1214 transitions. [2020-10-13 14:14:59,481 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1214 transitions. Word has length 64 [2020-10-13 14:14:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:59,481 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1214 transitions. [2020-10-13 14:14:59,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:14:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1214 transitions. [2020-10-13 14:14:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:59,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:59,483 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] [2020-10-13 14:14:59,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:14:59,483 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:59,484 INFO L82 PathProgramCache]: Analyzing trace with hash 103950116, now seen corresponding path program 1 times [2020-10-13 14:14:59,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:59,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564278247] [2020-10-13 14:14:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:59,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:15:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:15:04,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:15:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:15:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:04,786 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:04,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:04,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:15:04,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:04,817 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 14:15:04,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564278247] [2020-10-13 14:15:04,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:04,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:15:04,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566658482] [2020-10-13 14:15:04,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:04,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:04,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:04,819 INFO L87 Difference]: Start difference. First operand 863 states and 1214 transitions. Second operand 6 states. [2020-10-13 14:15:05,094 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:15:06,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:06,758 INFO L93 Difference]: Finished difference Result 2217 states and 3198 transitions. [2020-10-13 14:15:06,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:15:06,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:15:06,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:06,766 INFO L225 Difference]: With dead ends: 2217 [2020-10-13 14:15:06,766 INFO L226 Difference]: Without dead ends: 1805 [2020-10-13 14:15:06,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2020-10-13 14:15:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1479. [2020-10-13 14:15:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-13 14:15:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2144 transitions. [2020-10-13 14:15:06,926 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2144 transitions. Word has length 64 [2020-10-13 14:15:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:06,926 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2144 transitions. [2020-10-13 14:15:06,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2144 transitions. [2020-10-13 14:15:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:15:06,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:06,928 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] [2020-10-13 14:15:06,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:15:06,928 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1656486796, now seen corresponding path program 1 times [2020-10-13 14:15:06,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:06,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081058970] [2020-10-13 14:15:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:15:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:15:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:15:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:12,223 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:12,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:15:12,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:12,259 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 14:15:12,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081058970] [2020-10-13 14:15:12,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:12,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:12,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951117994] [2020-10-13 14:15:12,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:12,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:12,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:12,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:12,261 INFO L87 Difference]: Start difference. First operand 1479 states and 2144 transitions. Second operand 6 states. [2020-10-13 14:15:12,557 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-13 14:15:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:13,748 INFO L93 Difference]: Finished difference Result 1915 states and 2793 transitions. [2020-10-13 14:15:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:13,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:15:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:13,752 INFO L225 Difference]: With dead ends: 1915 [2020-10-13 14:15:13,752 INFO L226 Difference]: Without dead ends: 797 [2020-10-13 14:15:13,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:15:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-13 14:15:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 566. [2020-10-13 14:15:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-13 14:15:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 777 transitions. [2020-10-13 14:15:13,821 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 777 transitions. Word has length 64 [2020-10-13 14:15:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:13,822 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 777 transitions. [2020-10-13 14:15:13,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 777 transitions. [2020-10-13 14:15:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:15:13,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:13,824 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] [2020-10-13 14:15:13,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:15:13,824 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1606107799, now seen corresponding path program 1 times [2020-10-13 14:15:13,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:13,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191844709] [2020-10-13 14:15:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:15:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:15:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:15:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:15:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:19,129 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:19,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:19,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:15:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:19,178 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 14:15:19,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191844709] [2020-10-13 14:15:19,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:19,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:19,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601644579] [2020-10-13 14:15:19,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:19,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:19,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:19,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:19,180 INFO L87 Difference]: Start difference. First operand 566 states and 777 transitions. Second operand 6 states. [2020-10-13 14:15:19,466 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-13 14:15:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:20,527 INFO L93 Difference]: Finished difference Result 872 states and 1190 transitions. [2020-10-13 14:15:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:20,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:15:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:20,532 INFO L225 Difference]: With dead ends: 872 [2020-10-13 14:15:20,532 INFO L226 Difference]: Without dead ends: 543 [2020-10-13 14:15:20,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-13 14:15:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 513. [2020-10-13 14:15:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-13 14:15:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 708 transitions. [2020-10-13 14:15:20,585 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 708 transitions. Word has length 64 [2020-10-13 14:15:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:20,586 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 708 transitions. [2020-10-13 14:15:20,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 708 transitions. [2020-10-13 14:15:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:15:20,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:20,587 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] [2020-10-13 14:15:20,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:15:20,588 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:20,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1381325977, now seen corresponding path program 1 times [2020-10-13 14:15:20,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:20,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553404594] [2020-10-13 14:15:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:25,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:15:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:26,035 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:26,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:15:26,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:26,064 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 14:15:26,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553404594] [2020-10-13 14:15:26,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:26,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:26,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321904168] [2020-10-13 14:15:26,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:26,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:26,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:26,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:26,067 INFO L87 Difference]: Start difference. First operand 513 states and 708 transitions. Second operand 11 states. [2020-10-13 14:15:26,484 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-13 14:15:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:29,753 INFO L93 Difference]: Finished difference Result 2291 states and 3322 transitions. [2020-10-13 14:15:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:15:29,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-13 14:15:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:29,758 INFO L225 Difference]: With dead ends: 2291 [2020-10-13 14:15:29,758 INFO L226 Difference]: Without dead ends: 2073 [2020-10-13 14:15:29,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:15:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2020-10-13 14:15:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 513. [2020-10-13 14:15:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-13 14:15:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 707 transitions. [2020-10-13 14:15:29,832 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 707 transitions. Word has length 65 [2020-10-13 14:15:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:29,833 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 707 transitions. [2020-10-13 14:15:29,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 707 transitions. [2020-10-13 14:15:29,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:15:29,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:29,835 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] [2020-10-13 14:15:29,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:15:29,835 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:29,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1000678244, now seen corresponding path program 1 times [2020-10-13 14:15:29,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:29,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809786524] [2020-10-13 14:15:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:15:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:35,281 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:35,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:35,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:35,308 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 14:15:35,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809786524] [2020-10-13 14:15:35,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:35,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:15:35,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918346527] [2020-10-13 14:15:35,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:15:35,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:35,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:15:35,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:15:35,310 INFO L87 Difference]: Start difference. First operand 513 states and 707 transitions. Second operand 10 states. [2020-10-13 14:15:36,061 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-13 14:15:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:38,652 INFO L93 Difference]: Finished difference Result 1425 states and 2040 transitions. [2020-10-13 14:15:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:15:38,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-13 14:15:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:38,655 INFO L225 Difference]: With dead ends: 1425 [2020-10-13 14:15:38,655 INFO L226 Difference]: Without dead ends: 1185 [2020-10-13 14:15:38,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:15:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-10-13 14:15:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 513. [2020-10-13 14:15:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-13 14:15:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 706 transitions. [2020-10-13 14:15:38,716 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 706 transitions. Word has length 65 [2020-10-13 14:15:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:38,716 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 706 transitions. [2020-10-13 14:15:38,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:15:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 706 transitions. [2020-10-13 14:15:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:15:38,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:38,717 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] [2020-10-13 14:15:38,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:15:38,717 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:38,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2146673407, now seen corresponding path program 1 times [2020-10-13 14:15:38,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:38,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273979493] [2020-10-13 14:15:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:43,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:15:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:44,076 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:44,099 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 14:15:44,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273979493] [2020-10-13 14:15:44,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:44,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:15:44,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381121715] [2020-10-13 14:15:44,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:15:44,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:44,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:15:44,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:15:44,101 INFO L87 Difference]: Start difference. First operand 513 states and 706 transitions. Second operand 7 states. [2020-10-13 14:15:44,399 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-13 14:15:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:45,627 INFO L93 Difference]: Finished difference Result 1028 states and 1428 transitions. [2020-10-13 14:15:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:15:45,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:15:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:45,629 INFO L225 Difference]: With dead ends: 1028 [2020-10-13 14:15:45,629 INFO L226 Difference]: Without dead ends: 718 [2020-10-13 14:15:45,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-13 14:15:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 449. [2020-10-13 14:15:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-13 14:15:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 612 transitions. [2020-10-13 14:15:45,704 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 612 transitions. Word has length 65 [2020-10-13 14:15:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:45,704 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 612 transitions. [2020-10-13 14:15:45,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:15:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 612 transitions. [2020-10-13 14:15:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:15:45,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:45,705 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] [2020-10-13 14:15:45,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:15:45,705 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash 836898918, now seen corresponding path program 1 times [2020-10-13 14:15:45,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:45,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137950344] [2020-10-13 14:15:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:15:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:51,078 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:51,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:51,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:51,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:15:51,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:51,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:51,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:51,109 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 14:15:51,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137950344] [2020-10-13 14:15:51,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:51,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:51,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994490959] [2020-10-13 14:15:51,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:51,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:51,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:51,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:51,111 INFO L87 Difference]: Start difference. First operand 449 states and 612 transitions. Second operand 11 states. [2020-10-13 14:15:51,381 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:15:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:53,273 INFO L93 Difference]: Finished difference Result 1526 states and 2179 transitions. [2020-10-13 14:15:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:15:53,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:15:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:53,276 INFO L225 Difference]: With dead ends: 1526 [2020-10-13 14:15:53,276 INFO L226 Difference]: Without dead ends: 1314 [2020-10-13 14:15:53,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:15:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-10-13 14:15:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 439. [2020-10-13 14:15:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-13 14:15:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 597 transitions. [2020-10-13 14:15:53,342 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 597 transitions. Word has length 67 [2020-10-13 14:15:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:53,343 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 597 transitions. [2020-10-13 14:15:53,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 597 transitions. [2020-10-13 14:15:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:15:53,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:53,344 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] [2020-10-13 14:15:53,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:15:53,344 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:53,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1905531698, now seen corresponding path program 1 times [2020-10-13 14:15:53,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417936592] [2020-10-13 14:15:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:15:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:58,772 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:58,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:58,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:58,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:58,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:15:58,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:58,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:58,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:58,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:58,803 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 14:15:58,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417936592] [2020-10-13 14:15:58,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:58,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395475171] [2020-10-13 14:15:58,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:58,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:58,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:58,806 INFO L87 Difference]: Start difference. First operand 439 states and 597 transitions. Second operand 11 states. [2020-10-13 14:15:59,576 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 225 [2020-10-13 14:16:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:04,344 INFO L93 Difference]: Finished difference Result 1932 states and 2779 transitions. [2020-10-13 14:16:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:16:04,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:16:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:04,350 INFO L225 Difference]: With dead ends: 1932 [2020-10-13 14:16:04,350 INFO L226 Difference]: Without dead ends: 1915 [2020-10-13 14:16:04,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 14:16:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2020-10-13 14:16:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 439. [2020-10-13 14:16:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-13 14:16:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 596 transitions. [2020-10-13 14:16:04,523 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 596 transitions. Word has length 67 [2020-10-13 14:16:04,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:04,524 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 596 transitions. [2020-10-13 14:16:04,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 596 transitions. [2020-10-13 14:16:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:04,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:04,526 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] [2020-10-13 14:16:04,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:16:04,528 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:04,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1401723830, now seen corresponding path program 1 times [2020-10-13 14:16:04,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:04,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712276332] [2020-10-13 14:16:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:09,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:09,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:16:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:16:09,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:16:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:09,936 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:09,963 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 14:16:09,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712276332] [2020-10-13 14:16:09,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:09,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:09,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69933238] [2020-10-13 14:16:09,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:09,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:09,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:09,965 INFO L87 Difference]: Start difference. First operand 439 states and 596 transitions. Second operand 11 states. [2020-10-13 14:16:10,306 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-13 14:16:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:14,771 INFO L93 Difference]: Finished difference Result 2747 states and 3976 transitions. [2020-10-13 14:16:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:16:14,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:16:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:14,778 INFO L225 Difference]: With dead ends: 2747 [2020-10-13 14:16:14,778 INFO L226 Difference]: Without dead ends: 2742 [2020-10-13 14:16:14,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:16:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2020-10-13 14:16:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 439. [2020-10-13 14:16:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-13 14:16:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 595 transitions. [2020-10-13 14:16:14,930 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 595 transitions. Word has length 67 [2020-10-13 14:16:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:14,931 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 595 transitions. [2020-10-13 14:16:14,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 595 transitions. [2020-10-13 14:16:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:14,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:14,933 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] [2020-10-13 14:16:14,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:16:14,933 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:14,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1283936521, now seen corresponding path program 1 times [2020-10-13 14:16:14,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:14,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030236070] [2020-10-13 14:16:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:19,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:19,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:19,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:16:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:16:19,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:16:19,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:20,317 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:20,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:16:20,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:20,339 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 14:16:20,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030236070] [2020-10-13 14:16:20,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:20,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:20,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448951738] [2020-10-13 14:16:20,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:20,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:20,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:20,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:20,341 INFO L87 Difference]: Start difference. First operand 439 states and 595 transitions. Second operand 11 states. [2020-10-13 14:16:20,724 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-13 14:16:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:23,872 INFO L93 Difference]: Finished difference Result 2636 states and 3815 transitions. [2020-10-13 14:16:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:16:23,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:16:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:23,877 INFO L225 Difference]: With dead ends: 2636 [2020-10-13 14:16:23,877 INFO L226 Difference]: Without dead ends: 2422 [2020-10-13 14:16:23,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:16:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2020-10-13 14:16:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 439. [2020-10-13 14:16:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-13 14:16:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 593 transitions. [2020-10-13 14:16:24,022 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 593 transitions. Word has length 67 [2020-10-13 14:16:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:24,022 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 593 transitions. [2020-10-13 14:16:24,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 593 transitions. [2020-10-13 14:16:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:24,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:24,024 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] [2020-10-13 14:16:24,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:16:24,024 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:24,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:24,026 INFO L82 PathProgramCache]: Analyzing trace with hash 885121441, now seen corresponding path program 1 times [2020-10-13 14:16:24,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:24,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793658828] [2020-10-13 14:16:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:24,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:29,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:29,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:16:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:16:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:16:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:16:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:29,416 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:29,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:29,440 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 14:16:29,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793658828] [2020-10-13 14:16:29,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:29,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:16:29,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447979486] [2020-10-13 14:16:29,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:16:29,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:29,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:16:29,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:16:29,442 INFO L87 Difference]: Start difference. First operand 439 states and 593 transitions. Second operand 10 states. [2020-10-13 14:16:29,713 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:16:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:31,088 INFO L93 Difference]: Finished difference Result 958 states and 1342 transitions. [2020-10-13 14:16:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:31,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:16:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:31,091 INFO L225 Difference]: With dead ends: 958 [2020-10-13 14:16:31,091 INFO L226 Difference]: Without dead ends: 746 [2020-10-13 14:16:31,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:16:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-10-13 14:16:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 427. [2020-10-13 14:16:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-13 14:16:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 576 transitions. [2020-10-13 14:16:31,233 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 576 transitions. Word has length 67 [2020-10-13 14:16:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:31,234 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 576 transitions. [2020-10-13 14:16:31,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:16:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 576 transitions. [2020-10-13 14:16:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:31,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:31,235 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] [2020-10-13 14:16:31,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:16:31,236 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1847272574, now seen corresponding path program 1 times [2020-10-13 14:16:31,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:31,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699140528] [2020-10-13 14:16:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:31,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:16:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:16:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:16:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:36,594 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:36,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:36,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:16:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:36,633 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 14:16:36,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699140528] [2020-10-13 14:16:36,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:36,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:16:36,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738893921] [2020-10-13 14:16:36,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:16:36,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:36,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:16:36,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:16:36,635 INFO L87 Difference]: Start difference. First operand 427 states and 576 transitions. Second operand 8 states. [2020-10-13 14:16:36,936 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-13 14:16:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:37,938 INFO L93 Difference]: Finished difference Result 875 states and 1235 transitions. [2020-10-13 14:16:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:16:37,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-13 14:16:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:37,940 INFO L225 Difference]: With dead ends: 875 [2020-10-13 14:16:37,940 INFO L226 Difference]: Without dead ends: 595 [2020-10-13 14:16:37,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:16:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-13 14:16:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 353. [2020-10-13 14:16:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-13 14:16:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 480 transitions. [2020-10-13 14:16:38,057 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 480 transitions. Word has length 67 [2020-10-13 14:16:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:38,057 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 480 transitions. [2020-10-13 14:16:38,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:16:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 480 transitions. [2020-10-13 14:16:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:16:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:38,058 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] [2020-10-13 14:16:38,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:16:38,059 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1836325368, now seen corresponding path program 1 times [2020-10-13 14:16:38,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:38,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910817839] [2020-10-13 14:16:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:43,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:43,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:16:43,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:16:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:16:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:16:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:43,442 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:43,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:43,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:16:43,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:43,477 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 14:16:43,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910817839] [2020-10-13 14:16:43,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:43,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:43,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478045202] [2020-10-13 14:16:43,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:43,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:43,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:43,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:43,479 INFO L87 Difference]: Start difference. First operand 353 states and 480 transitions. Second operand 11 states. [2020-10-13 14:16:43,799 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-13 14:16:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:45,130 INFO L93 Difference]: Finished difference Result 845 states and 1199 transitions. [2020-10-13 14:16:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 14:16:45,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-13 14:16:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:45,132 INFO L225 Difference]: With dead ends: 845 [2020-10-13 14:16:45,132 INFO L226 Difference]: Without dead ends: 603 [2020-10-13 14:16:45,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:16:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-13 14:16:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 357. [2020-10-13 14:16:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-13 14:16:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 484 transitions. [2020-10-13 14:16:45,242 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 484 transitions. Word has length 68 [2020-10-13 14:16:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:45,242 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 484 transitions. [2020-10-13 14:16:45,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 484 transitions. [2020-10-13 14:16:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:16:45,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:45,244 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] [2020-10-13 14:16:45,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:16:45,244 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 828430217, now seen corresponding path program 1 times [2020-10-13 14:16:45,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:45,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640103953] [2020-10-13 14:16:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:48,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2911 [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:16:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:48,523 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:48,549 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 14:16:48,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640103953] [2020-10-13 14:16:48,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:48,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:48,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2519465] [2020-10-13 14:16:48,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:48,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:48,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:48,551 INFO L87 Difference]: Start difference. First operand 357 states and 484 transitions. Second operand 11 states. [2020-10-13 14:16:48,854 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:16:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:50,243 INFO L93 Difference]: Finished difference Result 840 states and 1193 transitions. [2020-10-13 14:16:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:50,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-13 14:16:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:50,247 INFO L225 Difference]: With dead ends: 840 [2020-10-13 14:16:50,247 INFO L226 Difference]: Without dead ends: 601 [2020-10-13 14:16:50,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:16:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-13 14:16:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 359. [2020-10-13 14:16:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-13 14:16:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 487 transitions. [2020-10-13 14:16:50,363 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 487 transitions. Word has length 69 [2020-10-13 14:16:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:50,363 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 487 transitions. [2020-10-13 14:16:50,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 487 transitions. [2020-10-13 14:16:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:16:50,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:50,364 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] [2020-10-13 14:16:50,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:16:50,365 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1551221307, now seen corresponding path program 1 times [2020-10-13 14:16:50,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:50,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451966534] [2020-10-13 14:16:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:55,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:16:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:16:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:16:55,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:16:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:16:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:16:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:55,684 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:55,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:55,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:55,706 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 14:16:55,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451966534] [2020-10-13 14:16:55,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:55,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:16:55,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374657009] [2020-10-13 14:16:55,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:16:55,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:55,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:16:55,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:16:55,708 INFO L87 Difference]: Start difference. First operand 359 states and 487 transitions. Second operand 8 states. [2020-10-13 14:16:56,007 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-13 14:16:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:56,878 INFO L93 Difference]: Finished difference Result 603 states and 844 transitions. [2020-10-13 14:16:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:56,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-13 14:16:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:56,879 INFO L225 Difference]: With dead ends: 603 [2020-10-13 14:16:56,879 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 14:16:56,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:16:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 14:16:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 359. [2020-10-13 14:16:56,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-13 14:16:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 486 transitions. [2020-10-13 14:16:56,973 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 486 transitions. Word has length 69 [2020-10-13 14:16:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:56,973 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 486 transitions. [2020-10-13 14:16:56,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:16:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 486 transitions. [2020-10-13 14:16:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:56,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:56,975 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] [2020-10-13 14:16:56,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:16:56,975 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1842298989, now seen corresponding path program 1 times [2020-10-13 14:16:56,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:56,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638081391] [2020-10-13 14:16:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:58,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:16:58,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:16:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-13 14:16:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:16:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:16:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:16:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:59,224 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:59,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:59,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:59,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:59,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:16:59,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:59,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:16:59,268 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 14:16:59,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638081391] [2020-10-13 14:16:59,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:59,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:16:59,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012465989] [2020-10-13 14:16:59,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:16:59,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:59,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:16:59,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:16:59,270 INFO L87 Difference]: Start difference. First operand 359 states and 486 transitions. Second operand 12 states. [2020-10-13 14:16:59,592 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:02,325 INFO L93 Difference]: Finished difference Result 1255 states and 1806 transitions. [2020-10-13 14:17:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:17:02,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-13 14:17:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:02,327 INFO L225 Difference]: With dead ends: 1255 [2020-10-13 14:17:02,327 INFO L226 Difference]: Without dead ends: 1031 [2020-10-13 14:17:02,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-13 14:17:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-13 14:17:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 359. [2020-10-13 14:17:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-13 14:17:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 485 transitions. [2020-10-13 14:17:02,477 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 485 transitions. Word has length 70 [2020-10-13 14:17:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:02,477 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 485 transitions. [2020-10-13 14:17:02,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:17:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 485 transitions. [2020-10-13 14:17:02,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:17:02,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:02,479 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] [2020-10-13 14:17:02,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:17:02,480 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1300532373, now seen corresponding path program 1 times [2020-10-13 14:17:02,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:02,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029826380] [2020-10-13 14:17:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:06,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:06,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:17:06,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:17:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4477 [2020-10-13 14:17:06,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:17:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:17:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:07,418 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:07,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:07,442 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 14:17:07,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029826380] [2020-10-13 14:17:07,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:07,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:07,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735466381] [2020-10-13 14:17:07,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:07,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:07,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:07,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:07,444 INFO L87 Difference]: Start difference. First operand 359 states and 485 transitions. Second operand 11 states. [2020-10-13 14:17:07,781 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-13 14:17:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:10,246 INFO L93 Difference]: Finished difference Result 1420 states and 2027 transitions. [2020-10-13 14:17:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 14:17:10,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:17:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:10,248 INFO L225 Difference]: With dead ends: 1420 [2020-10-13 14:17:10,248 INFO L226 Difference]: Without dead ends: 1413 [2020-10-13 14:17:10,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:17:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-10-13 14:17:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 359. [2020-10-13 14:17:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-13 14:17:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2020-10-13 14:17:10,335 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 70 [2020-10-13 14:17:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:10,335 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2020-10-13 14:17:10,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2020-10-13 14:17:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:17:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:10,336 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] [2020-10-13 14:17:10,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:17:10,337 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1531805258, now seen corresponding path program 1 times [2020-10-13 14:17:10,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:10,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324578878] [2020-10-13 14:17:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:17:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:12,575 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:12,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:17:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:12,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:17:12,625 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 14:17:12,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324578878] [2020-10-13 14:17:12,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:12,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:17:12,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063553507] [2020-10-13 14:17:12,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:17:12,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:17:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:12,629 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand 12 states. [2020-10-13 14:17:13,048 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:17:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:14,511 INFO L93 Difference]: Finished difference Result 706 states and 983 transitions. [2020-10-13 14:17:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:17:14,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-13 14:17:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:14,512 INFO L225 Difference]: With dead ends: 706 [2020-10-13 14:17:14,512 INFO L226 Difference]: Without dead ends: 702 [2020-10-13 14:17:14,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:17:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-13 14:17:14,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 365. [2020-10-13 14:17:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 14:17:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 492 transitions. [2020-10-13 14:17:14,603 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 492 transitions. Word has length 70 [2020-10-13 14:17:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:14,603 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 492 transitions. [2020-10-13 14:17:14,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:17:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 492 transitions. [2020-10-13 14:17:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:17:14,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:14,604 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] [2020-10-13 14:17:14,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:17:14,604 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:14,605 INFO L82 PathProgramCache]: Analyzing trace with hash -696278331, now seen corresponding path program 1 times [2020-10-13 14:17:14,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:14,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903362655] [2020-10-13 14:17:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:19,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:17:19,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:17:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:17:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:17:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:17:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:19,995 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:20,021 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 14:17:20,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903362655] [2020-10-13 14:17:20,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:20,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:20,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910077581] [2020-10-13 14:17:20,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:20,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:20,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:20,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:20,022 INFO L87 Difference]: Start difference. First operand 365 states and 492 transitions. Second operand 11 states. [2020-10-13 14:17:20,312 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:17:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:21,997 INFO L93 Difference]: Finished difference Result 1104 states and 1576 transitions. [2020-10-13 14:17:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:21,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:17:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:21,999 INFO L225 Difference]: With dead ends: 1104 [2020-10-13 14:17:21,999 INFO L226 Difference]: Without dead ends: 887 [2020-10-13 14:17:22,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:17:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-10-13 14:17:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 354. [2020-10-13 14:17:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-13 14:17:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 479 transitions. [2020-10-13 14:17:22,083 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 479 transitions. Word has length 70 [2020-10-13 14:17:22,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:22,083 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 479 transitions. [2020-10-13 14:17:22,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 479 transitions. [2020-10-13 14:17:22,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:17:22,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:22,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:22,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:17:22,084 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 856968566, now seen corresponding path program 1 times [2020-10-13 14:17:22,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:22,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791939725] [2020-10-13 14:17:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:23,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:23,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:17:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:24,056 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:24,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:24,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:24,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:17:24,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:24,082 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 14:17:24,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791939725] [2020-10-13 14:17:24,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:24,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:17:24,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745226416] [2020-10-13 14:17:24,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:17:24,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:17:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:24,084 INFO L87 Difference]: Start difference. First operand 354 states and 479 transitions. Second operand 8 states. [2020-10-13 14:17:24,390 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-13 14:17:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:25,784 INFO L93 Difference]: Finished difference Result 705 states and 991 transitions. [2020-10-13 14:17:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:17:25,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-13 14:17:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:25,786 INFO L225 Difference]: With dead ends: 705 [2020-10-13 14:17:25,786 INFO L226 Difference]: Without dead ends: 481 [2020-10-13 14:17:25,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:17:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-13 14:17:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 354. [2020-10-13 14:17:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-13 14:17:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 478 transitions. [2020-10-13 14:17:25,943 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 478 transitions. Word has length 71 [2020-10-13 14:17:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:25,944 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 478 transitions. [2020-10-13 14:17:25,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:17:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 478 transitions. [2020-10-13 14:17:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:17:25,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:25,945 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] [2020-10-13 14:17:25,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:17:25,945 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash 554818844, now seen corresponding path program 1 times [2020-10-13 14:17:25,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:25,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605908167] [2020-10-13 14:17:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:28,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2256 [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:17:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:28,607 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:28,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:28,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:28,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:17:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:28,633 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 14:17:28,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605908167] [2020-10-13 14:17:28,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:28,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:17:28,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496009795] [2020-10-13 14:17:28,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:17:28,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:17:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:28,635 INFO L87 Difference]: Start difference. First operand 354 states and 478 transitions. Second operand 12 states. [2020-10-13 14:17:28,986 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-13 14:17:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:30,908 INFO L93 Difference]: Finished difference Result 754 states and 1047 transitions. [2020-10-13 14:17:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:30,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-13 14:17:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:30,910 INFO L225 Difference]: With dead ends: 754 [2020-10-13 14:17:30,910 INFO L226 Difference]: Without dead ends: 747 [2020-10-13 14:17:30,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:17:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-13 14:17:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 354. [2020-10-13 14:17:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-13 14:17:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 477 transitions. [2020-10-13 14:17:30,997 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 477 transitions. Word has length 71 [2020-10-13 14:17:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:30,998 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 477 transitions. [2020-10-13 14:17:30,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:17:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 477 transitions. [2020-10-13 14:17:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:17:30,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:30,998 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] [2020-10-13 14:17:30,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:17:30,999 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:30,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:30,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1687503595, now seen corresponding path program 1 times [2020-10-13 14:17:30,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:30,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300173295] [2020-10-13 14:17:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking...