/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/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:13:57,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:13:57,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:13:57,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:13:57,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:13:57,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:13:57,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:13:57,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:13:57,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:13:57,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:13:57,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:13:57,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:13:57,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:13:57,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:13:57,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:13:57,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:13:57,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:13:57,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:13:57,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:13:57,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:13:57,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:13:57,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:13:57,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:13:57,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:13:57,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:13:57,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:13:57,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:13:57,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:13:57,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:13:57,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:13:57,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:13:57,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:13:57,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:13:57,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:13:57,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:13:57,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:13:57,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:13:57,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:13:57,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:13:57,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:13:57,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:13:57,684 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 13:13:57,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:13:57,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:13:57,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:13:57,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:13:57,709 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:13:57,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:13:57,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:13:57,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:13:57,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:13:57,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:13:57,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:13:57,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:13:57,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:13:57,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:13:57,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:13:57,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:13:57,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:13:57,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:13:57,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:13:57,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:13:57,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:13:57,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:13:57,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:13:57,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:13:57,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:13:57,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:13:57,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:13:57,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:13:57,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:13:57,714 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 13:13:58,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:13:58,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:13:58,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:13:58,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:13:58,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:13:58,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-13 13:13:58,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8783ce833/64c12c3e96504e41aec24de6d49e347e/FLAGb306d9ad9 [2020-10-13 13:13:58,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:13:58,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-13 13:13:58,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8783ce833/64c12c3e96504e41aec24de6d49e347e/FLAGb306d9ad9 [2020-10-13 13:13:58,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8783ce833/64c12c3e96504e41aec24de6d49e347e [2020-10-13 13:13:58,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:13:58,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:13:58,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:13:58,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:13:58,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:13:58,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:13:58" (1/1) ... [2020-10-13 13:13:59,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dab12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59, skipping insertion in model container [2020-10-13 13:13:59,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:13:58" (1/1) ... [2020-10-13 13:13:59,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:13:59,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:13:59,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:13:59,350 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:13:59,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:13:59,548 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:13:59,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59 WrapperNode [2020-10-13 13:13:59,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:13:59,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:13:59,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:13:59,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:13:59,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (1/1) ... [2020-10-13 13:13:59,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:13:59,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:13:59,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:13:59,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:13:59,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (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 13:13:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:13:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:13:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:13:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:13:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:13:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:13:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:13:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:13:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:13:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:13:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:13:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:13:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:13:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:13:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:13:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:13:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:13:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:13:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:13:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:13:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:13:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:13:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:13:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:13:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:13:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:13:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:14:00,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:14:00,462 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:14:00,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:00 BoogieIcfgContainer [2020-10-13 13:14:00,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:14:00,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:14:00,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:14:00,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:14:00,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:13:58" (1/3) ... [2020-10-13 13:14:00,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207ed36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:14:00, skipping insertion in model container [2020-10-13 13:14:00,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:59" (2/3) ... [2020-10-13 13:14:00,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207ed36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:14:00, skipping insertion in model container [2020-10-13 13:14:00,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:00" (3/3) ... [2020-10-13 13:14:00,479 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-13 13:14:00,490 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:14:00,498 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:14:00,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:14:00,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:14:00,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:14:00,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:14:00,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:14:00,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:14:00,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:14:00,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:14:00,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:14:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-13 13:14:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:14:00,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:00,572 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] [2020-10-13 13:14:00,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1833414674, now seen corresponding path program 1 times [2020-10-13 13:14:00,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:00,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241016634] [2020-10-13 13:14:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:14:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-13 13:14:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:14:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:14:01,582 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:14:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:01,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:14:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:14:01,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:01,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:14:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:01,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:14:01,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:14:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:14:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:14:01,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:14:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:14:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:01,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:14:01,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:14:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:01,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:14:01,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:14:01,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:14:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:01,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:14:01,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:01,911 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 13:14:01,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241016634] [2020-10-13 13:14:01,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:01,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:14:01,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357921895] [2020-10-13 13:14:01,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:14:01,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:01,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:14:01,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:14:01,946 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 6 states. [2020-10-13 13:14:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:02,957 INFO L93 Difference]: Finished difference Result 266 states and 420 transitions. [2020-10-13 13:14:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:14:02,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 13:14:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:02,973 INFO L225 Difference]: With dead ends: 266 [2020-10-13 13:14:02,973 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 13:14:02,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 13:14:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 13:14:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 153. [2020-10-13 13:14:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 13:14:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 243 transitions. [2020-10-13 13:14:03,039 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 243 transitions. Word has length 62 [2020-10-13 13:14:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:03,040 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 243 transitions. [2020-10-13 13:14:03,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:14:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 243 transitions. [2020-10-13 13:14:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:14:03,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:03,044 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] [2020-10-13 13:14:03,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:14:03,044 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:03,045 INFO L82 PathProgramCache]: Analyzing trace with hash 989409172, now seen corresponding path program 1 times [2020-10-13 13:14:03,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:03,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425429911] [2020-10-13 13:14:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:03,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:03,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:14:03,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-13 13:14:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:14:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:14:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:14:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,086 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:14:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:14:04,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:14:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:14:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:14:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:04,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:04,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:14:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:14:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:04,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:14:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:14:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:04,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:14:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:04,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:04,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:14:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:04,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:04,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:04,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:14:04,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:04,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:04,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:04,443 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 13:14:04,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425429911] [2020-10-13 13:14:04,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:04,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:14:04,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177784842] [2020-10-13 13:14:04,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:14:04,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:04,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:14:04,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:14:04,448 INFO L87 Difference]: Start difference. First operand 153 states and 243 transitions. Second operand 12 states. [2020-10-13 13:14:04,901 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:14:05,133 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:14:05,402 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:14:05,575 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:14:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:07,029 INFO L93 Difference]: Finished difference Result 264 states and 412 transitions. [2020-10-13 13:14:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:14:07,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-13 13:14:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:07,035 INFO L225 Difference]: With dead ends: 264 [2020-10-13 13:14:07,039 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 13:14:07,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:14:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 13:14:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 153. [2020-10-13 13:14:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 13:14:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 222 transitions. [2020-10-13 13:14:07,073 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 222 transitions. Word has length 62 [2020-10-13 13:14:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:07,073 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 222 transitions. [2020-10-13 13:14:07,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:14:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 222 transitions. [2020-10-13 13:14:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 13:14:07,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:07,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:14:07,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:14:07,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:07,078 INFO L82 PathProgramCache]: Analyzing trace with hash -501611408, now seen corresponding path program 1 times [2020-10-13 13:14:07,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:07,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125377766] [2020-10-13 13:14:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:14:12,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:14:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 13:14:12,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:14:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:14:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:14:12,428 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:12,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:14:12,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:12,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:12,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:14:12,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:14:12,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:14:12,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:14:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:12,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:14:12,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:14:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:14:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:14:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:14:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:14:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:12,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:14:12,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:14:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:14:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:14:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:12,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:12,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:12,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:12,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:12,854 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 13:14:12,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125377766] [2020-10-13 13:14:12,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:12,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:14:12,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873569993] [2020-10-13 13:14:12,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:14:12,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:12,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:14:12,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:14:12,861 INFO L87 Difference]: Start difference. First operand 153 states and 222 transitions. Second operand 9 states. [2020-10-13 13:14:13,145 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:14:14,990 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:14:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:15,566 INFO L93 Difference]: Finished difference Result 373 states and 561 transitions. [2020-10-13 13:14:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:14:15,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 13:14:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:15,573 INFO L225 Difference]: With dead ends: 373 [2020-10-13 13:14:15,574 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 13:14:15,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:14:15,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 13:14:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 244. [2020-10-13 13:14:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-13 13:14:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 358 transitions. [2020-10-13 13:14:15,625 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 358 transitions. Word has length 82 [2020-10-13 13:14:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:15,626 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 358 transitions. [2020-10-13 13:14:15,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:14:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 358 transitions. [2020-10-13 13:14:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:14:15,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:15,629 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] [2020-10-13 13:14:15,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:14:15,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash -301752865, now seen corresponding path program 1 times [2020-10-13 13:14:15,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:15,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999079356] [2020-10-13 13:14:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:20,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:20,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:14:20,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:14:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:14:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:14:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:14:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:20,919 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:20,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:14:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:20,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:20,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:20,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:14:20,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:14:20,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:14:20,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:14:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:21,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:14:21,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:14:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:14:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:21,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:14:21,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:14:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:14:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:14:21,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:14:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:14:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:14:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:21,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:14:21,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:14:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:21,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:21,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:21,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:14:21,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:21,291 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 13:14:21,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999079356] [2020-10-13 13:14:21,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:21,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:14:21,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364762884] [2020-10-13 13:14:21,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:14:21,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:14:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:14:21,296 INFO L87 Difference]: Start difference. First operand 244 states and 358 transitions. Second operand 9 states. [2020-10-13 13:14:21,469 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:14:23,345 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:14:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:23,700 INFO L93 Difference]: Finished difference Result 674 states and 1008 transitions. [2020-10-13 13:14:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:14:23,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 13:14:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:23,705 INFO L225 Difference]: With dead ends: 674 [2020-10-13 13:14:23,706 INFO L226 Difference]: Without dead ends: 493 [2020-10-13 13:14:23,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:14:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-13 13:14:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 427. [2020-10-13 13:14:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-13 13:14:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 636 transitions. [2020-10-13 13:14:23,758 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 636 transitions. Word has length 84 [2020-10-13 13:14:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:23,758 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 636 transitions. [2020-10-13 13:14:23,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:14:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 636 transitions. [2020-10-13 13:14:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:14:23,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:23,761 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] [2020-10-13 13:14:23,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:14:23,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1241905970, now seen corresponding path program 1 times [2020-10-13 13:14:23,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:23,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614030814] [2020-10-13 13:14:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:28,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:28,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:14:28,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:14:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:14:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:14:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:14:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:28,979 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:28,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:28,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:28,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:14:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:14:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:14:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:14:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:14:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:29,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:29,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:29,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:29,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:14:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:29,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:29,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:14:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:14:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:29,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:29,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:29,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:14:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:14:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:29,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:14:29,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:14:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:14:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:14:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:14:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:29,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:14:29,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:29,227 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 13:14:29,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614030814] [2020-10-13 13:14:29,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:29,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:14:29,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46948843] [2020-10-13 13:14:29,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:14:29,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:29,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:14:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:14:29,230 INFO L87 Difference]: Start difference. First operand 427 states and 636 transitions. Second operand 9 states. [2020-10-13 13:14:29,387 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:14:31,282 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:14:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:31,582 INFO L93 Difference]: Finished difference Result 1283 states and 1930 transitions. [2020-10-13 13:14:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:14:31,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-13 13:14:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:31,590 INFO L225 Difference]: With dead ends: 1283 [2020-10-13 13:14:31,590 INFO L226 Difference]: Without dead ends: 919 [2020-10-13 13:14:31,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:14:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-10-13 13:14:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 797. [2020-10-13 13:14:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-10-13 13:14:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1194 transitions. [2020-10-13 13:14:31,689 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1194 transitions. Word has length 86 [2020-10-13 13:14:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:31,689 INFO L479 AbstractCegarLoop]: Abstraction has 797 states and 1194 transitions. [2020-10-13 13:14:31,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:14:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1194 transitions. [2020-10-13 13:14:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:14:31,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:31,692 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] [2020-10-13 13:14:31,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:14:31,692 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:31,693 INFO L82 PathProgramCache]: Analyzing trace with hash -405028611, now seen corresponding path program 1 times [2020-10-13 13:14:31,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:31,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285612617] [2020-10-13 13:14:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:31,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:14:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:36,908 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:36,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:36,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:36,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:14:36,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:36,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:14:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:14:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:14:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:14:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:14:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:37,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:14:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:14:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:37,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:14:37,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:14:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:37,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:14:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:37,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:37,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:37,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:14:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:37,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:37,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:37,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:14:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:37,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:14:37,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:37,276 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 13:14:37,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285612617] [2020-10-13 13:14:37,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:37,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:14:37,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308672753] [2020-10-13 13:14:37,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:14:37,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:14:37,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:14:37,279 INFO L87 Difference]: Start difference. First operand 797 states and 1194 transitions. Second operand 9 states. [2020-10-13 13:14:37,543 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:14:37,825 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:14:38,097 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:14:38,970 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2020-10-13 13:14:39,391 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:14:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:41,827 INFO L93 Difference]: Finished difference Result 2702 states and 4074 transitions. [2020-10-13 13:14:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:14:41,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:14:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:41,839 INFO L225 Difference]: With dead ends: 2702 [2020-10-13 13:14:41,839 INFO L226 Difference]: Without dead ends: 1936 [2020-10-13 13:14:41,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:14:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-13 13:14:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1766. [2020-10-13 13:14:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1766 states. [2020-10-13 13:14:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2610 transitions. [2020-10-13 13:14:41,989 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2610 transitions. Word has length 88 [2020-10-13 13:14:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:41,990 INFO L479 AbstractCegarLoop]: Abstraction has 1766 states and 2610 transitions. [2020-10-13 13:14:41,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:14:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2610 transitions. [2020-10-13 13:14:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:14:41,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:41,994 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] [2020-10-13 13:14:41,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:14:41,994 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash -329087011, now seen corresponding path program 1 times [2020-10-13 13:14:41,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:41,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455513136] [2020-10-13 13:14:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:42,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:14:47,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:14:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:14:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:14:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:14:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:47,168 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:47,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:47,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:14:47,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:47,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 13:14:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:14:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:14:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:14:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:47,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:14:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:47,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:47,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:14:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:14:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:47,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:14:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:14:47,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:14:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:47,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:47,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:14:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:47,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:14:47,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:14:47,421 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 13:14:47,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455513136] [2020-10-13 13:14:47,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:47,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:14:47,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141568104] [2020-10-13 13:14:47,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:14:47,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:47,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:14:47,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:14:47,435 INFO L87 Difference]: Start difference. First operand 1766 states and 2610 transitions. Second operand 7 states. [2020-10-13 13:14:47,646 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:14:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:48,945 INFO L93 Difference]: Finished difference Result 3764 states and 5529 transitions. [2020-10-13 13:14:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:14:48,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-13 13:14:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:48,958 INFO L225 Difference]: With dead ends: 3764 [2020-10-13 13:14:48,958 INFO L226 Difference]: Without dead ends: 2032 [2020-10-13 13:14:48,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:14:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2020-10-13 13:14:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1768. [2020-10-13 13:14:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2020-10-13 13:14:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2612 transitions. [2020-10-13 13:14:49,147 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2612 transitions. Word has length 89 [2020-10-13 13:14:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:49,147 INFO L479 AbstractCegarLoop]: Abstraction has 1768 states and 2612 transitions. [2020-10-13 13:14:49,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:14:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2612 transitions. [2020-10-13 13:14:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:14:49,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:49,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:49,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:14:49,151 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1223558536, now seen corresponding path program 1 times [2020-10-13 13:14:49,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:49,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061742324] [2020-10-13 13:14:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:14:54,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:14:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:14:54,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:14:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:14:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:14:54,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,366 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:14:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:14:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:14:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:14:54,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:14:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:14:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:14:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:14:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:14:54,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:14:54,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:14:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:14:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:14:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:14:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:14:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:14:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:14:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:14:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:14:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:14:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:14:54,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:14:54,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:14:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:14:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:14:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:14:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:14:54,623 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 13:14:54,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061742324] [2020-10-13 13:14:54,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:14:54,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:14:54,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426657363] [2020-10-13 13:14:54,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:14:54,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:14:54,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:14:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:14:54,625 INFO L87 Difference]: Start difference. First operand 1768 states and 2612 transitions. Second operand 9 states. [2020-10-13 13:14:54,816 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:14:55,059 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:14:55,287 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:14:55,856 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2020-10-13 13:14:56,456 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:14:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:14:59,170 INFO L93 Difference]: Finished difference Result 6132 states and 9145 transitions. [2020-10-13 13:14:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:14:59,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:14:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:14:59,195 INFO L225 Difference]: With dead ends: 6132 [2020-10-13 13:14:59,195 INFO L226 Difference]: Without dead ends: 4400 [2020-10-13 13:14:59,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:14:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2020-10-13 13:14:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 4034. [2020-10-13 13:14:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4034 states. [2020-10-13 13:14:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 5881 transitions. [2020-10-13 13:14:59,470 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 5881 transitions. Word has length 90 [2020-10-13 13:14:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:14:59,472 INFO L479 AbstractCegarLoop]: Abstraction has 4034 states and 5881 transitions. [2020-10-13 13:14:59,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:14:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 5881 transitions. [2020-10-13 13:14:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:14:59,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:14:59,480 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] [2020-10-13 13:14:59,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:14:59,481 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:14:59,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:14:59,481 INFO L82 PathProgramCache]: Analyzing trace with hash 655332014, now seen corresponding path program 1 times [2020-10-13 13:14:59,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:14:59,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869214121] [2020-10-13 13:14:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:14:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:14:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:14:59,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:15:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,705 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:04,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:04,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:15:04,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:15:04,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:04,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:15:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:15:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:04,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:15:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:15:04,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:15:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:15:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:15:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:04,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:15:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:15:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:04,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:04,890 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 13:15:04,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869214121] [2020-10-13 13:15:04,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:04,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:15:04,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174063394] [2020-10-13 13:15:04,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:15:04,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:15:04,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:15:04,892 INFO L87 Difference]: Start difference. First operand 4034 states and 5881 transitions. Second operand 8 states. [2020-10-13 13:15:05,072 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:06,368 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:15:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:07,394 INFO L93 Difference]: Finished difference Result 7250 states and 10739 transitions. [2020-10-13 13:15:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:15:07,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-13 13:15:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:07,421 INFO L225 Difference]: With dead ends: 7250 [2020-10-13 13:15:07,422 INFO L226 Difference]: Without dead ends: 4863 [2020-10-13 13:15:07,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2020-10-13 13:15:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4465. [2020-10-13 13:15:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2020-10-13 13:15:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6455 transitions. [2020-10-13 13:15:07,790 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 6455 transitions. Word has length 90 [2020-10-13 13:15:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:07,790 INFO L479 AbstractCegarLoop]: Abstraction has 4465 states and 6455 transitions. [2020-10-13 13:15:07,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:15:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 6455 transitions. [2020-10-13 13:15:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:15:07,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:07,795 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] [2020-10-13 13:15:07,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:15:07,795 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:07,796 INFO L82 PathProgramCache]: Analyzing trace with hash -595178223, now seen corresponding path program 1 times [2020-10-13 13:15:07,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:07,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227515961] [2020-10-13 13:15:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:15:12,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:15:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4343 [2020-10-13 13:15:12,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:15:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:15:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:15:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,334 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:15:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:12,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:12,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:15:12,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:15:12,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:12,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:15:12,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:15:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:12,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:12,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:15:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:12,767 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 13:15:12,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227515961] [2020-10-13 13:15:12,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:12,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:15:12,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932646243] [2020-10-13 13:15:12,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:15:12,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:12,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:15:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:15:12,770 INFO L87 Difference]: Start difference. First operand 4465 states and 6455 transitions. Second operand 13 states. [2020-10-13 13:15:12,954 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:13,355 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:13,518 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:14,794 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:15:14,947 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:16,776 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:18,040 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-13 13:15:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:20,688 INFO L93 Difference]: Finished difference Result 25267 states and 38522 transitions. [2020-10-13 13:15:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 13:15:20,688 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2020-10-13 13:15:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:20,814 INFO L225 Difference]: With dead ends: 25267 [2020-10-13 13:15:20,814 INFO L226 Difference]: Without dead ends: 21233 [2020-10-13 13:15:20,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 13:15:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21233 states. [2020-10-13 13:15:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21233 to 18125. [2020-10-13 13:15:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18125 states. [2020-10-13 13:15:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18125 states to 18125 states and 26807 transitions. [2020-10-13 13:15:22,153 INFO L78 Accepts]: Start accepts. Automaton has 18125 states and 26807 transitions. Word has length 90 [2020-10-13 13:15:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:22,153 INFO L479 AbstractCegarLoop]: Abstraction has 18125 states and 26807 transitions. [2020-10-13 13:15:22,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:15:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 18125 states and 26807 transitions. [2020-10-13 13:15:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:15:22,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:22,158 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 13:15:22,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:15:22,159 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:22,159 INFO L82 PathProgramCache]: Analyzing trace with hash -293611994, now seen corresponding path program 1 times [2020-10-13 13:15:22,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:22,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849457796] [2020-10-13 13:15:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:22,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:15:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,355 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:15:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:15:27,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:15:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:27,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 13:15:27,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:27,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:15:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:15:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:15:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:15:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:27,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:15:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:27,766 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 13:15:27,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849457796] [2020-10-13 13:15:27,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:27,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:15:27,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600261659] [2020-10-13 13:15:27,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:15:27,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:27,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:15:27,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:15:27,773 INFO L87 Difference]: Start difference. First operand 18125 states and 26807 transitions. Second operand 14 states. [2020-10-13 13:15:28,005 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:15:28,512 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:28,677 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:28,848 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:30,294 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:30,466 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:30,659 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:15:30,839 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:33,997 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:34,198 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:39,646 INFO L93 Difference]: Finished difference Result 75400 states and 113946 transitions. [2020-10-13 13:15:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 13:15:39,647 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-13 13:15:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:39,935 INFO L225 Difference]: With dead ends: 75400 [2020-10-13 13:15:39,935 INFO L226 Difference]: Without dead ends: 57706 [2020-10-13 13:15:40,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 13:15:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57706 states. [2020-10-13 13:15:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57706 to 51515. [2020-10-13 13:15:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51515 states. [2020-10-13 13:15:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51515 states to 51515 states and 77991 transitions. [2020-10-13 13:15:44,265 INFO L78 Accepts]: Start accepts. Automaton has 51515 states and 77991 transitions. Word has length 91 [2020-10-13 13:15:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:44,266 INFO L479 AbstractCegarLoop]: Abstraction has 51515 states and 77991 transitions. [2020-10-13 13:15:44,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:15:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 51515 states and 77991 transitions. [2020-10-13 13:15:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:15:44,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:44,271 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 13:15:44,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:15:44,271 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash 413321576, now seen corresponding path program 1 times [2020-10-13 13:15:44,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:44,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057112783] [2020-10-13 13:15:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:15:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:15:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:15:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:15:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:15:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:15:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,455 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:49,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:15:49,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:15:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:15:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:15:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:15:49,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:49,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:15:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:49,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:49,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:49,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:49,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:15:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:15:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:49,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:49,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:15:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:15:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,667 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 13:15:49,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057112783] [2020-10-13 13:15:49,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:49,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:15:49,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207753652] [2020-10-13 13:15:49,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:15:49,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:49,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:15:49,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:15:49,669 INFO L87 Difference]: Start difference. First operand 51515 states and 77991 transitions. Second operand 10 states. [2020-10-13 13:15:49,862 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:50,276 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:51,981 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:52,238 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:00,336 INFO L93 Difference]: Finished difference Result 174869 states and 266002 transitions. [2020-10-13 13:16:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:16:00,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 13:16:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:00,842 INFO L225 Difference]: With dead ends: 174869 [2020-10-13 13:16:00,842 INFO L226 Difference]: Without dead ends: 124087 [2020-10-13 13:16:01,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:16:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124087 states. [2020-10-13 13:16:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124087 to 109929. [2020-10-13 13:16:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109929 states. [2020-10-13 13:16:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109929 states to 109929 states and 167147 transitions. [2020-10-13 13:16:08,665 INFO L78 Accepts]: Start accepts. Automaton has 109929 states and 167147 transitions. Word has length 92 [2020-10-13 13:16:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:08,665 INFO L479 AbstractCegarLoop]: Abstraction has 109929 states and 167147 transitions. [2020-10-13 13:16:08,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:16:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 109929 states and 167147 transitions. [2020-10-13 13:16:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:16:08,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:08,671 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 13:16:08,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:16:08,672 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash 801740829, now seen corresponding path program 1 times [2020-10-13 13:16:08,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:08,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491402912] [2020-10-13 13:16:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:16:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 13:16:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:16:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,867 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:16:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:16:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:13,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:13,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:13,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:14,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:16:14,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:16:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:16:14,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:14,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:16:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:14,101 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 13:16:14,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491402912] [2020-10-13 13:16:14,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:14,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:16:14,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850811012] [2020-10-13 13:16:14,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:16:14,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:14,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:16:14,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:16:14,103 INFO L87 Difference]: Start difference. First operand 109929 states and 167147 transitions. Second operand 10 states. [2020-10-13 13:16:14,287 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:14,731 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:15,874 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:16,056 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:29,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:29,995 INFO L93 Difference]: Finished difference Result 424647 states and 648756 transitions. [2020-10-13 13:16:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:16:29,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-10-13 13:16:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:30,945 INFO L225 Difference]: With dead ends: 424647 [2020-10-13 13:16:30,945 INFO L226 Difference]: Without dead ends: 315553 [2020-10-13 13:16:31,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:16:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315553 states. [2020-10-13 13:16:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315553 to 215401. [2020-10-13 13:16:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215401 states. [2020-10-13 13:16:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215401 states to 215401 states and 329023 transitions. [2020-10-13 13:16:47,211 INFO L78 Accepts]: Start accepts. Automaton has 215401 states and 329023 transitions. Word has length 93 [2020-10-13 13:16:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:47,212 INFO L479 AbstractCegarLoop]: Abstraction has 215401 states and 329023 transitions. [2020-10-13 13:16:47,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:16:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 215401 states and 329023 transitions. [2020-10-13 13:16:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:16:47,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:47,218 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 13:16:47,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:16:47,218 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:47,218 INFO L82 PathProgramCache]: Analyzing trace with hash 286221150, now seen corresponding path program 1 times [2020-10-13 13:16:47,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:47,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316455208] [2020-10-13 13:16:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:16:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:16:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,406 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:52,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:52,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:52,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:16:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:16:52,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:16:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:16:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:52,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:52,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:52,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:52,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:16:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 13:16:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:52,596 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 13:16:52,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316455208] [2020-10-13 13:16:52,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:52,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:52,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550253612] [2020-10-13 13:16:52,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:52,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:52,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:52,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:52,598 INFO L87 Difference]: Start difference. First operand 215401 states and 329023 transitions. Second operand 8 states. [2020-10-13 13:16:52,772 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:54,437 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:17:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:12,210 INFO L93 Difference]: Finished difference Result 561579 states and 861783 transitions. [2020-10-13 13:17:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:17:12,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-10-13 13:17:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:13,312 INFO L225 Difference]: With dead ends: 561579 [2020-10-13 13:17:13,312 INFO L226 Difference]: Without dead ends: 375499 [2020-10-13 13:17:13,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:17:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375499 states.