/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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:27:58,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:27:58,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:27:58,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:27:58,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:27:58,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:27:58,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:27:58,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:27:58,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:27:58,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:27:58,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:27:58,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:27:58,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:27:58,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:27:58,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:27:58,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:27:58,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:27:58,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:27:58,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:27:58,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:27:58,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:27:58,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:27:58,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:27:58,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:27:58,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:27:58,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:27:58,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:27:58,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:27:58,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:27:58,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:27:58,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:27:58,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:27:58,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:27:58,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:27:58,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:27:58,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:27:58,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:27:58,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:27:58,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:27:58,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:27:58,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:27:58,698 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 14:27:58,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:27:58,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:27:58,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:27:58,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:27:58,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:27:58,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:27:58,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:27:58,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:27:58,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:27:58,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:27:58,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:27:58,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:27:58,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:27:58,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:27:58,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:27:58,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:27:58,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:27:58,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:27:58,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:27:58,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:27:58,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:27:58,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:27:58,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:27:58,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:27:58,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:27:58,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:27:58,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:27:58,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:27:58,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:27:58,746 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 14:27:59,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:27:59,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:27:59,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:27:59,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:27:59,077 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:27:59,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:27:59,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04268ffb5/a1aa19b1f939452da98d5a7b290c2b8b/FLAG64e8c3273 [2020-10-13 14:27:59,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:27:59,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:27:59,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04268ffb5/a1aa19b1f939452da98d5a7b290c2b8b/FLAG64e8c3273 [2020-10-13 14:28:00,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04268ffb5/a1aa19b1f939452da98d5a7b290c2b8b [2020-10-13 14:28:00,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:28:00,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:28:00,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:28:00,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:28:00,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:28:00,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00, skipping insertion in model container [2020-10-13 14:28:00,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:28:00,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:28:00,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:28:00,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:28:00,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:28:00,732 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:28:00,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00 WrapperNode [2020-10-13 14:28:00,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:28:00,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:28:00,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:28:00,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:28:00,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (1/1) ... [2020-10-13 14:28:00,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:28:00,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:28:00,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:28:00,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:28:00,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (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 14:28:00,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:28:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:28:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:28:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:28:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:28:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:28:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:28:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:28:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:28:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:28:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:28:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:28:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:28:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:28:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:28:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:28:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:28:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:28:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:28:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:28:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:28:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:28:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:28:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:28:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:28:01,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:28:01,586 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:28:01,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:28:01 BoogieIcfgContainer [2020-10-13 14:28:01,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:28:01,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:28:01,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:28:01,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:28:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:28:00" (1/3) ... [2020-10-13 14:28:01,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e43805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:28:01, skipping insertion in model container [2020-10-13 14:28:01,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:00" (2/3) ... [2020-10-13 14:28:01,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e43805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:28:01, skipping insertion in model container [2020-10-13 14:28:01,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:28:01" (3/3) ... [2020-10-13 14:28:01,602 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 14:28:01,614 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:28:01,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:28:01,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:28:01,669 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:28:01,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:28:01,670 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:28:01,670 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:28:01,670 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:28:01,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:28:01,671 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:28:01,671 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:28:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-10-13 14:28:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 14:28:01,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:01,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:01,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1044039479, now seen corresponding path program 1 times [2020-10-13 14:28:01,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:01,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065211272] [2020-10-13 14:28:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:07,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:07,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 14:28:07,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:28:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:28:07,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:28:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:28:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:28:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:28:07,628 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:07,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:07,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:07,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:07,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:28:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:07,718 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 14:28:07,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065211272] [2020-10-13 14:28:07,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:07,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:28:07,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126384701] [2020-10-13 14:28:07,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:28:07,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:28:07,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:28:07,748 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 4 states. [2020-10-13 14:28:08,062 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:09,036 INFO L93 Difference]: Finished difference Result 307 states and 497 transitions. [2020-10-13 14:28:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:28:09,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-13 14:28:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:09,055 INFO L225 Difference]: With dead ends: 307 [2020-10-13 14:28:09,056 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 14:28:09,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:28:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 14:28:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-10-13 14:28:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-13 14:28:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2020-10-13 14:28:09,129 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 91 [2020-10-13 14:28:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:09,130 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2020-10-13 14:28:09,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:28:09,131 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2020-10-13 14:28:09,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 14:28:09,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:09,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:09,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:28:09,135 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:09,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2102290872, now seen corresponding path program 1 times [2020-10-13 14:28:09,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:09,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013881567] [2020-10-13 14:28:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:09,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:14,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 14:28:14,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:28:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:28:14,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:28:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:28:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:28:14,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:14,457 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:14,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:14,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:14,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:28:14,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:14,510 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 14:28:14,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013881567] [2020-10-13 14:28:14,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:14,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:28:14,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958787394] [2020-10-13 14:28:14,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:28:14,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:14,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:28:14,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:28:14,515 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand 4 states. [2020-10-13 14:28:14,745 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:15,628 INFO L93 Difference]: Finished difference Result 503 states and 766 transitions. [2020-10-13 14:28:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:28:15,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-13 14:28:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:15,632 INFO L225 Difference]: With dead ends: 503 [2020-10-13 14:28:15,632 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 14:28:15,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:28:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 14:28:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-10-13 14:28:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-13 14:28:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 518 transitions. [2020-10-13 14:28:15,665 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 518 transitions. Word has length 92 [2020-10-13 14:28:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:15,666 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 518 transitions. [2020-10-13 14:28:15,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:28:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 518 transitions. [2020-10-13 14:28:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 14:28:15,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:15,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:15,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:28:15,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash -632355156, now seen corresponding path program 1 times [2020-10-13 14:28:15,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:15,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981934352] [2020-10-13 14:28:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:16,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 14:28:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:28:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:28:20,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:28:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:28:20,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:28:20,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:20,965 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:20,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:20,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:20,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:28:20,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:21,015 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 14:28:21,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981934352] [2020-10-13 14:28:21,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:21,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:28:21,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291326519] [2020-10-13 14:28:21,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:28:21,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:21,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:28:21,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:28:21,018 INFO L87 Difference]: Start difference. First operand 347 states and 518 transitions. Second operand 4 states. [2020-10-13 14:28:21,258 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:21,983 INFO L93 Difference]: Finished difference Result 895 states and 1388 transitions. [2020-10-13 14:28:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:28:21,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-13 14:28:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:21,988 INFO L225 Difference]: With dead ends: 895 [2020-10-13 14:28:21,989 INFO L226 Difference]: Without dead ends: 605 [2020-10-13 14:28:21,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:28:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-10-13 14:28:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2020-10-13 14:28:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-13 14:28:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 922 transitions. [2020-10-13 14:28:22,044 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 922 transitions. Word has length 93 [2020-10-13 14:28:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:22,044 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 922 transitions. [2020-10-13 14:28:22,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:28:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 922 transitions. [2020-10-13 14:28:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 14:28:22,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:22,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:22,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:28:22,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1396487100, now seen corresponding path program 1 times [2020-10-13 14:28:22,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:22,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420383081] [2020-10-13 14:28:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:27,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:27,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 14:28:27,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:28:27,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:28:27,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:28:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:28:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:28:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:27,331 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:27,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:27,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:28:27,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:27,371 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 14:28:27,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420383081] [2020-10-13 14:28:27,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:27,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:28:27,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024062418] [2020-10-13 14:28:27,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:28:27,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:28:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:28:27,374 INFO L87 Difference]: Start difference. First operand 603 states and 922 transitions. Second operand 4 states. [2020-10-13 14:28:27,623 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:28,313 INFO L93 Difference]: Finished difference Result 1631 states and 2548 transitions. [2020-10-13 14:28:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:28:28,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-13 14:28:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:28,323 INFO L225 Difference]: With dead ends: 1631 [2020-10-13 14:28:28,323 INFO L226 Difference]: Without dead ends: 1085 [2020-10-13 14:28:28,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:28:28,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-10-13 14:28:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1083. [2020-10-13 14:28:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-13 14:28:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1674 transitions. [2020-10-13 14:28:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1674 transitions. Word has length 94 [2020-10-13 14:28:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:28,383 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1674 transitions. [2020-10-13 14:28:28,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:28:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1674 transitions. [2020-10-13 14:28:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 14:28:28,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:28,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:28,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:28:28,388 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:28,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1441454313, now seen corresponding path program 1 times [2020-10-13 14:28:28,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:28,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823197874] [2020-10-13 14:28:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:33,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:33,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 14:28:33,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:28:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:28:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:28:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:28:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:28:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:33,716 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:33,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:33,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:28:33,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:33,784 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 14:28:33,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823197874] [2020-10-13 14:28:33,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:33,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:28:33,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867806463] [2020-10-13 14:28:33,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:28:33,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:33,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:28:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:28:33,789 INFO L87 Difference]: Start difference. First operand 1083 states and 1674 transitions. Second operand 4 states. [2020-10-13 14:28:34,114 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:34,960 INFO L93 Difference]: Finished difference Result 3007 states and 4700 transitions. [2020-10-13 14:28:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:28:34,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-13 14:28:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:34,972 INFO L225 Difference]: With dead ends: 3007 [2020-10-13 14:28:34,973 INFO L226 Difference]: Without dead ends: 1981 [2020-10-13 14:28:34,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:28:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-13 14:28:35,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1979. [2020-10-13 14:28:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-10-13 14:28:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 3066 transitions. [2020-10-13 14:28:35,069 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 3066 transitions. Word has length 95 [2020-10-13 14:28:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:35,070 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 3066 transitions. [2020-10-13 14:28:35,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:28:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 3066 transitions. [2020-10-13 14:28:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 14:28:35,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:35,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:35,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:28:35,072 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash -944065711, now seen corresponding path program 1 times [2020-10-13 14:28:35,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:35,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291433360] [2020-10-13 14:28:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:40,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:40,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 14:28:40,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:28:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:28:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:40,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:28:40,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 14:28:40,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 14:28:40,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:40,337 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:40,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:40,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:40,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:28:40,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:40,380 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 14:28:40,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291433360] [2020-10-13 14:28:40,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:40,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:28:40,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594356873] [2020-10-13 14:28:40,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:28:40,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:28:40,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:28:40,383 INFO L87 Difference]: Start difference. First operand 1979 states and 3066 transitions. Second operand 4 states. [2020-10-13 14:28:40,594 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:41,468 INFO L93 Difference]: Finished difference Result 5567 states and 8668 transitions. [2020-10-13 14:28:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:28:41,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-13 14:28:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:41,493 INFO L225 Difference]: With dead ends: 5567 [2020-10-13 14:28:41,493 INFO L226 Difference]: Without dead ends: 3645 [2020-10-13 14:28:41,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:28:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2020-10-13 14:28:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3643. [2020-10-13 14:28:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2020-10-13 14:28:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5626 transitions. [2020-10-13 14:28:41,770 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5626 transitions. Word has length 96 [2020-10-13 14:28:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:41,771 INFO L479 AbstractCegarLoop]: Abstraction has 3643 states and 5626 transitions. [2020-10-13 14:28:41,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:28:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5626 transitions. [2020-10-13 14:28:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:28:41,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:41,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:41,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:28:41,774 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:41,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1576756346, now seen corresponding path program 1 times [2020-10-13 14:28:41,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:41,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545224342] [2020-10-13 14:28:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:46,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:28:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:28:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:28:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:28:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:28:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:47,078 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:47,128 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 14:28:47,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545224342] [2020-10-13 14:28:47,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:47,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:47,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442612905] [2020-10-13 14:28:47,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:47,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:47,130 INFO L87 Difference]: Start difference. First operand 3643 states and 5626 transitions. Second operand 7 states. [2020-10-13 14:28:47,365 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:49,257 INFO L93 Difference]: Finished difference Result 32235 states and 49986 transitions. [2020-10-13 14:28:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:49,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:28:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:49,378 INFO L225 Difference]: With dead ends: 32235 [2020-10-13 14:28:49,378 INFO L226 Difference]: Without dead ends: 28649 [2020-10-13 14:28:49,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28649 states. [2020-10-13 14:28:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28649 to 10747. [2020-10-13 14:28:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10747 states. [2020-10-13 14:28:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 16602 transitions. [2020-10-13 14:28:50,179 INFO L78 Accepts]: Start accepts. Automaton has 10747 states and 16602 transitions. Word has length 97 [2020-10-13 14:28:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:50,180 INFO L479 AbstractCegarLoop]: Abstraction has 10747 states and 16602 transitions. [2020-10-13 14:28:50,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10747 states and 16602 transitions. [2020-10-13 14:28:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:28:50,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:50,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:50,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:28:50,182 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:50,183 INFO L82 PathProgramCache]: Analyzing trace with hash 112684789, now seen corresponding path program 1 times [2020-10-13 14:28:50,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:50,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768111012] [2020-10-13 14:28:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:55,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:55,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:28:55,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:28:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:28:55,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:55,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:55,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:28:55,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:28:55,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:55,422 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:55,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:55,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:28:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:55,456 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 14:28:55,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768111012] [2020-10-13 14:28:55,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:55,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:55,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669128215] [2020-10-13 14:28:55,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:55,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:55,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:55,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:55,459 INFO L87 Difference]: Start difference. First operand 10747 states and 16602 transitions. Second operand 7 states. [2020-10-13 14:28:55,720 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:28:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:59,121 INFO L93 Difference]: Finished difference Result 95979 states and 148386 transitions. [2020-10-13 14:28:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:59,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:28:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:00,205 INFO L225 Difference]: With dead ends: 95979 [2020-10-13 14:29:00,205 INFO L226 Difference]: Without dead ends: 85289 [2020-10-13 14:29:00,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85289 states. [2020-10-13 14:29:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85289 to 31931. [2020-10-13 14:29:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31931 states. [2020-10-13 14:29:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31931 states to 31931 states and 49210 transitions. [2020-10-13 14:29:02,277 INFO L78 Accepts]: Start accepts. Automaton has 31931 states and 49210 transitions. Word has length 97 [2020-10-13 14:29:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:02,278 INFO L479 AbstractCegarLoop]: Abstraction has 31931 states and 49210 transitions. [2020-10-13 14:29:02,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 31931 states and 49210 transitions. [2020-10-13 14:29:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:29:02,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:02,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:02,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:29:02,280 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1729345744, now seen corresponding path program 1 times [2020-10-13 14:29:02,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:02,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732563547] [2020-10-13 14:29:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:07,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:07,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:29:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:07,551 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:29:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:07,583 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 14:29:07,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732563547] [2020-10-13 14:29:07,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:07,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:07,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523105836] [2020-10-13 14:29:07,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:07,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:07,585 INFO L87 Difference]: Start difference. First operand 31931 states and 49210 transitions. Second operand 7 states. [2020-10-13 14:29:07,818 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:29:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:15,700 INFO L93 Difference]: Finished difference Result 222826 states and 343214 transitions. [2020-10-13 14:29:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:15,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:29:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:16,094 INFO L225 Difference]: With dead ends: 222826 [2020-10-13 14:29:16,095 INFO L226 Difference]: Without dead ends: 201544 [2020-10-13 14:29:16,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201544 states. [2020-10-13 14:29:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201544 to 63546. [2020-10-13 14:29:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63546 states. [2020-10-13 14:29:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63546 states to 63546 states and 97542 transitions. [2020-10-13 14:29:22,172 INFO L78 Accepts]: Start accepts. Automaton has 63546 states and 97542 transitions. Word has length 97 [2020-10-13 14:29:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:22,172 INFO L479 AbstractCegarLoop]: Abstraction has 63546 states and 97542 transitions. [2020-10-13 14:29:22,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 63546 states and 97542 transitions. [2020-10-13 14:29:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:29:22,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:22,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:22,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:29:22,174 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:22,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:22,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1062111002, now seen corresponding path program 1 times [2020-10-13 14:29:22,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:22,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948261994] [2020-10-13 14:29:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:27,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:27,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:29:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:29:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:29:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:29:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 14:29:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:27,423 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:27,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:27,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:27,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:29:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:27,449 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 14:29:27,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948261994] [2020-10-13 14:29:27,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:27,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:27,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049657924] [2020-10-13 14:29:27,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:27,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:27,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:27,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:27,451 INFO L87 Difference]: Start difference. First operand 63546 states and 97542 transitions. Second operand 7 states. [2020-10-13 14:29:27,680 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:29:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:45,812 INFO L93 Difference]: Finished difference Result 368735 states and 565389 transitions. [2020-10-13 14:29:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:45,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:29:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:46,317 INFO L225 Difference]: With dead ends: 368735 [2020-10-13 14:29:46,317 INFO L226 Difference]: Without dead ends: 326365 [2020-10-13 14:29:46,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326365 states. [2020-10-13 14:29:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326365 to 84487. [2020-10-13 14:29:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84487 states. [2020-10-13 14:29:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84487 states to 84487 states and 129053 transitions. [2020-10-13 14:29:52,641 INFO L78 Accepts]: Start accepts. Automaton has 84487 states and 129053 transitions. Word has length 97 [2020-10-13 14:29:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:52,642 INFO L479 AbstractCegarLoop]: Abstraction has 84487 states and 129053 transitions. [2020-10-13 14:29:52,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 84487 states and 129053 transitions. [2020-10-13 14:29:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:29:52,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:52,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:52,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:29:52,644 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1457111940, now seen corresponding path program 1 times [2020-10-13 14:29:52,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:52,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884991774] [2020-10-13 14:29:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:57,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:29:57,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:29:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:29:57,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:29:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:29:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:29:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:57,936 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:29:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:57,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:57,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:57,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:29:57,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:29:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:57,976 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 14:29:57,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884991774] [2020-10-13 14:29:57,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:57,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:29:57,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517556999] [2020-10-13 14:29:57,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:29:57,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:57,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:29:57,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:29:57,978 INFO L87 Difference]: Start difference. First operand 84487 states and 129053 transitions. Second operand 6 states. [2020-10-13 14:29:58,204 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-13 14:30:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:08,132 INFO L93 Difference]: Finished difference Result 196131 states and 299071 transitions. [2020-10-13 14:30:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:30:08,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-13 14:30:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:08,317 INFO L225 Difference]: With dead ends: 196131 [2020-10-13 14:30:08,317 INFO L226 Difference]: Without dead ends: 139786 [2020-10-13 14:30:08,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:30:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139786 states. [2020-10-13 14:30:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139786 to 111752. [2020-10-13 14:30:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111752 states. [2020-10-13 14:30:16,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111752 states to 111752 states and 169119 transitions. [2020-10-13 14:30:16,720 INFO L78 Accepts]: Start accepts. Automaton has 111752 states and 169119 transitions. Word has length 97 [2020-10-13 14:30:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:16,721 INFO L479 AbstractCegarLoop]: Abstraction has 111752 states and 169119 transitions. [2020-10-13 14:30:16,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:30:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 111752 states and 169119 transitions. [2020-10-13 14:30:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:30:16,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:16,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:16,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:30:16,723 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash -193947819, now seen corresponding path program 1 times [2020-10-13 14:30:16,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:16,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548635115] [2020-10-13 14:30:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:16,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:19,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:30:19,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:30:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2709 [2020-10-13 14:30:19,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:30:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:30:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:19,679 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:30:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:19,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:19,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:19,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:30:19,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:19,706 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 14:30:19,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548635115] [2020-10-13 14:30:19,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:19,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:19,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397928706] [2020-10-13 14:30:19,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:19,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:19,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:19,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:19,708 INFO L87 Difference]: Start difference. First operand 111752 states and 169119 transitions. Second operand 7 states. [2020-10-13 14:30:19,938 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:30:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:51,332 INFO L93 Difference]: Finished difference Result 512898 states and 776401 transitions. [2020-10-13 14:30:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:51,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:30:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:51,851 INFO L225 Difference]: With dead ends: 512898 [2020-10-13 14:30:51,851 INFO L226 Difference]: Without dead ends: 401280 [2020-10-13 14:30:51,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401280 states. [2020-10-13 14:31:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401280 to 111730. [2020-10-13 14:31:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111730 states. [2020-10-13 14:31:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111730 states to 111730 states and 169093 transitions. [2020-10-13 14:31:02,710 INFO L78 Accepts]: Start accepts. Automaton has 111730 states and 169093 transitions. Word has length 97 [2020-10-13 14:31:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:02,710 INFO L479 AbstractCegarLoop]: Abstraction has 111730 states and 169093 transitions. [2020-10-13 14:31:02,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 111730 states and 169093 transitions. [2020-10-13 14:31:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:31:02,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:02,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:02,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:31:02,718 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:02,718 INFO L82 PathProgramCache]: Analyzing trace with hash 201053119, now seen corresponding path program 1 times [2020-10-13 14:31:02,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:02,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800618448] [2020-10-13 14:31:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:05,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:05,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:31:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:05,314 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:31:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:05,340 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 14:31:05,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800618448] [2020-10-13 14:31:05,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:05,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:05,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121225528] [2020-10-13 14:31:05,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:05,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:05,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:05,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:05,342 INFO L87 Difference]: Start difference. First operand 111730 states and 169093 transitions. Second operand 7 states. [2020-10-13 14:31:05,573 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 14:31:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:36,737 INFO L93 Difference]: Finished difference Result 510702 states and 773247 transitions. [2020-10-13 14:31:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:36,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:31:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:37,324 INFO L225 Difference]: With dead ends: 510702 [2020-10-13 14:31:37,324 INFO L226 Difference]: Without dead ends: 399084 [2020-10-13 14:31:37,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399084 states.